Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

7 files changed, 1283 insertions, 0 deletions

diff --git a/toolkit/components/nimbus/schemas/ExperimentFeatureManifest.schema.json b/toolkit/components/nimbus/schemas/ExperimentFeatureManifest.schema.json
new file mode 100644
index 0000000000..d2e00b9e7f
--- /dev/null
+++ b/toolkit/components/nimbus/schemas/ExperimentFeatureManifest.schema.json
@@ -0,0 +1,131 @@
+{
+  "$schema": "https://json-schema.org/draft/2019-09/schema",
+  "additionalProperties": false,
+  "type": "object",
+  "properties": {
+    "description": {
+      "type": "string"
+    },
+    "owner": {
+      "type": "string",
+      "description": "The owner of the feature."
+    },
+    "applications": {
+      "description": "The applications that can enroll in experiments for this feature. Defaults to firefox-desktop if not present.",
+      "type": "array",
+      "items": {
+        "type": "string",
+        "enum": [
+          "firefox-desktop",
+          "firefox-desktop-background-task"
+        ]
+      },
+      "minItems": 1
+    },
+    "hasExposure": {
+      "type": "boolean",
+      "description": "If the feature sends an exposure event."
+    },
+    "exposureDescription": {
+      "type": "string",
+      "description": "A description of the implementation details of the exposure event, if one is sent."
+    },
+    "isEarlyStartup": {
+      "type": "boolean",
+      "description": "If the feature values should be cached in prefs for fast early startup."
+    },
+    "schema": {
+      "type": "object",
+      "description": "For features with large number of variables we instead point to a JSONSchema file instead of specifying them in the variables field",
+      "properties": {
+        "uri": {
+          "type": "string",
+          "description": "A resource:// URI that can be loaded at runtime from within Firefox.",
+          "format": "uri"
+        },
+        "path": {
+          "type": "string",
+          "description": "The path to the schema file relative to the repository root"
+        }
+      },
+      "required": [
+        "uri",
+        "path"
+      ]
+    },
+    "variables": {
+      "additionalProperties": false,
+      "type": "object",
+      "patternProperties": {
+        "[a-zA-Z0-9_]+": {
+          "type": "object",
+          "properties": {
+            "type": {
+              "type": "string",
+              "enum": [
+                "json",
+                "boolean",
+                "int",
+                "string"
+              ]
+            },
+            "fallbackPref": {
+              "type": "string",
+              "description": "A pref that provides the default value for a feature when none is present"
+            },
+            "setPref": {
+              "type": "string",
+              "description": "A pref that should be set to the value of this variable when enrolling in experiments."
+            },
+            "enum": {
+              "description": "Validate feature value using a list of possible options (for string only values)."
+            },
+            "description": {
+              "type": "string",
+              "description": "Explain how this value is being used"
+            }
+          },
+          "required": [
+            "type",
+            "description"
+          ],
+          "additionalProperties": false,
+          "dependentSchemas": {
+            "fallbackPref": {
+              "description": "setPref is mutually exclusive with fallbackPref",
+              "properties": {
+                "setPref": {
+                  "const": null
+                }
+              }
+            },
+            "setPref": {
+              "description": "fallbackPref is mutually exclusive with setPref",
+              "properties": {
+                "fallbackPref": {
+                  "const": null
+                }
+              }
+            }
+          }
+        }
+      }
+    }
+  },
+  "required": [
+    "description",
+    "hasExposure"
+  ],
+  "if": {
+    "properties": {
+      "hasExposure": {
+        "const": true
+      }
+    }
+  },
+  "then": {
+    "required": [
+      "exposureDescription"
+    ]
+  }
+}
diff --git a/toolkit/components/nimbus/schemas/ExperimentFeatureRemote.schema.json b/toolkit/components/nimbus/schemas/ExperimentFeatureRemote.schema.json
new file mode 100644
index 0000000000..a43d7d06af
--- /dev/null
+++ b/toolkit/components/nimbus/schemas/ExperimentFeatureRemote.schema.json
@@ -0,0 +1,152 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$ref": "#/definitions/Feature",
+  "definitions": {
+    "RemoteFeatureConfigurations": {
+      "type": "object",
+      "properties": {
+        "id": {
+          "type": "string",
+          "description": "Feature name for which the defaults are provided."
+        },
+        "configurations": {
+          "type": "array",
+          "items": {
+            "type": "object",
+            "properties": {
+              "slug": {
+                "type": "string",
+                "description": "Configuration identifier that will be included in Telemetry."
+              },
+              "variables": {
+                "type": "object",
+                "description": "Key value pairs that should match the feature manifest definition.",
+                "properties": {
+                  "enabled": {
+                    "type": "boolean"
+                  }
+                },
+                "required": ["enabled"]
+              },
+              "targeting": {
+                "type": "string",
+                "description": "Target the configuration only to specific clients."
+              },
+              "bucketConfig": {
+                "type": "object",
+                "properties": {
+                  "randomizationUnit": {
+                    "type": "string",
+                    "description": "A unique, stable identifier for the user used as an input to bucket hashing"
+                  },
+                  "namespace": {
+                    "type": "string",
+                    "description": "Additional inputs to the hashing function"
+                  },
+                  "start": {
+                    "type": "number",
+                    "description": "Index of start of the range of buckets"
+                  },
+                  "count": {
+                    "type": "number",
+                    "description": "Number of buckets to check"
+                  },
+                  "total": {
+                    "type": "number",
+                    "description": "Total number of buckets",
+                    "default": 10000
+                  }
+                },
+                "required": [
+                  "randomizationUnit",
+                  "namespace",
+                  "start",
+                  "count",
+                  "total"
+                ],
+                "additionalProperties": false,
+                "description": "Bucketing configuration"
+              },
+              "description": {
+                "type": "string",
+                "description": "Explanation for configuration and targeting"
+              }
+            },
+            "required": ["variables", "targeting", "bucketConfig", "slug"],
+            "additionalProperties": false
+          }
+        }
+      },
+      "required": ["id", "configurations"],
+      "additionalProperties": false
+    },
+    "RemoteFeatureConfiguration": {
+      "type": "object",
+      "properties": {
+        "slug": {
+          "type": "string",
+          "description": "Configuration identifier that will be included in Telemetry."
+        },
+        "isEarlyStartup": {
+          "type": "boolean",
+          "description": "If the feature values should be cached in prefs for fast early startup."
+        },
+        "variables": {
+          "type": "object",
+          "description": "Key value pairs that should match the feature manifest definition.",
+          "properties": {
+            "enabled": {
+              "type": "boolean"
+            }
+          },
+          "required": ["enabled"]
+        },
+        "targeting": {
+          "type": "string",
+          "description": "Target the configuration only to specific clients."
+        },
+        "bucketConfig": {
+          "type": "object",
+          "properties": {
+            "randomizationUnit": {
+              "type": "string",
+              "description": "A unique, stable identifier for the user used as an input to bucket hashing"
+            },
+            "namespace": {
+              "type": "string",
+              "description": "Additional inputs to the hashing function"
+            },
+            "start": {
+              "type": "number",
+              "description": "Index of start of the range of buckets"
+            },
+            "count": {
+              "type": "number",
+              "description": "Number of buckets to check"
+            },
+            "total": {
+              "type": "number",
+              "description": "Total number of buckets",
+              "default": 10000
+            }
+          },
+          "required": [
+            "randomizationUnit",
+            "namespace",
+            "start",
+            "count",
+            "total"
+          ],
+          "additionalProperties": false,
+          "description": "Bucketing configuration"
+        },
+        "description": {
+          "type": "string",
+          "description": "Explanation for configuration and targeting"
+        }
+      },
+      "required": ["variables", "targeting", "slug"],
+      "additionalProperties": false
+    }
+  }
+}
diff --git a/toolkit/components/nimbus/schemas/LICENSE b/toolkit/components/nimbus/schemas/LICENSE
new file mode 100644
index 0000000000..a612ad9813
--- /dev/null
+++ b/toolkit/components/nimbus/schemas/LICENSE
@@ -0,0 +1,373 @@
+Mozilla Public License Version 2.0
+==================================
+
+1. Definitions
+--------------
+
+1.1. "Contributor"
+    means each individual or legal entity that creates, contributes to
+    the creation of, or owns Covered Software.
+
+1.2. "Contributor Version"
+    means the combination of the Contributions of others (if any) used
+    by a Contributor and that particular Contributor's Contribution.
+
+1.3. "Contribution"
+    means Covered Software of a particular Contributor.
+
+1.4. "Covered Software"
+    means Source Code Form to which the initial Contributor has attached
+    the notice in Exhibit A, the Executable Form of such Source Code
+    Form, and Modifications of such Source Code Form, in each case
+    including portions thereof.
+
+1.5. "Incompatible With Secondary Licenses"
+    means
+
+    (a) that the initial Contributor has attached the notice described
+        in Exhibit B to the Covered Software; or
+
+    (b) that the Covered Software was made available under the terms of
+        version 1.1 or earlier of the License, but not also under the
+        terms of a Secondary License.
+
+1.6. "Executable Form"
+    means any form of the work other than Source Code Form.
+
+1.7. "Larger Work"
+    means a work that combines Covered Software with other material, in
+    a separate file or files, that is not Covered Software.
+
+1.8. "License"
+    means this document.
+
+1.9. "Licensable"
+    means having the right to grant, to the maximum extent possible,
+    whether at the time of the initial grant or subsequently, any and
+    all of the rights conveyed by this License.
+
+1.10. "Modifications"
+    means any of the following:
+
+    (a) any file in Source Code Form that results from an addition to,
+        deletion from, or modification of the contents of Covered
+        Software; or
+
+    (b) any new file in Source Code Form that contains any Covered
+        Software.
+
+1.11. "Patent Claims" of a Contributor
+    means any patent claim(s), including without limitation, method,
+    process, and apparatus claims, in any patent Licensable by such
+    Contributor that would be infringed, but for the grant of the
+    License, by the making, using, selling, offering for sale, having
+    made, import, or transfer of either its Contributions or its
+    Contributor Version.
+
+1.12. "Secondary License"
+    means either the GNU General Public License, Version 2.0, the GNU
+    Lesser General Public License, Version 2.1, the GNU Affero General
+    Public License, Version 3.0, or any later versions of those
+    licenses.
+
+1.13. "Source Code Form"
+    means the form of the work preferred for making modifications.
+
+1.14. "You" (or "Your")
+    means an individual or a legal entity exercising rights under this
+    License. For legal entities, "You" includes any entity that
+    controls, is controlled by, or is under common control with You. For
+    purposes of this definition, "control" means (a) the power, direct
+    or indirect, to cause the direction or management of such entity,
+    whether by contract or otherwise, or (b) ownership of more than
+    fifty percent (50%) of the outstanding shares or beneficial
+    ownership of such entity.
+
+2. License Grants and Conditions
+--------------------------------
+
+2.1. Grants
+
+Each Contributor hereby grants You a world-wide, royalty-free,
+non-exclusive license:
+
+(a) under intellectual property rights (other than patent or trademark)
+    Licensable by such Contributor to use, reproduce, make available,
+    modify, display, perform, distribute, and otherwise exploit its
+    Contributions, either on an unmodified basis, with Modifications, or
+    as part of a Larger Work; and
+
+(b) under Patent Claims of such Contributor to make, use, sell, offer
+    for sale, have made, import, and otherwise transfer either its
+    Contributions or its Contributor Version.
+
+2.2. Effective Date
+
+The licenses granted in Section 2.1 with respect to any Contribution
+become effective for each Contribution on the date the Contributor first
+distributes such Contribution.
+
+2.3. Limitations on Grant Scope
+
+The licenses granted in this Section 2 are the only rights granted under
+this License. No additional rights or licenses will be implied from the
+distribution or licensing of Covered Software under this License.
+Notwithstanding Section 2.1(b) above, no patent license is granted by a
+Contributor:
+
+(a) for any code that a Contributor has removed from Covered Software;
+    or
+
+(b) for infringements caused by: (i) Your and any other third party's
+    modifications of Covered Software, or (ii) the combination of its
+    Contributions with other software (except as part of its Contributor
+    Version); or
+
+(c) under Patent Claims infringed by Covered Software in the absence of
+    its Contributions.
+
+This License does not grant any rights in the trademarks, service marks,
+or logos of any Contributor (except as may be necessary to comply with
+the notice requirements in Section 3.4).
+
+2.4. Subsequent Licenses
+
+No Contributor makes additional grants as a result of Your choice to
+distribute the Covered Software under a subsequent version of this
+License (see Section 10.2) or under the terms of a Secondary License (if
+permitted under the terms of Section 3.3).
+
+2.5. Representation
+
+Each Contributor represents that the Contributor believes its
+Contributions are its original creation(s) or it has sufficient rights
+to grant the rights to its Contributions conveyed by this License.
+
+2.6. Fair Use
+
+This License is not intended to limit any rights You have under
+applicable copyright doctrines of fair use, fair dealing, or other
+equivalents.
+
+2.7. Conditions
+
+Sections 3.1, 3.2, 3.3, and 3.4 are conditions of the licenses granted
+in Section 2.1.
+
+3. Responsibilities
+-------------------
+
+3.1. Distribution of Source Form
+
+All distribution of Covered Software in Source Code Form, including any
+Modifications that You create or to which You contribute, must be under
+the terms of this License. You must inform recipients that the Source
+Code Form of the Covered Software is governed by the terms of this
+License, and how they can obtain a copy of this License. You may not
+attempt to alter or restrict the recipients' rights in the Source Code
+Form.
+
+3.2. Distribution of Executable Form
+
+If You distribute Covered Software in Executable Form then:
+
+(a) such Covered Software must also be made available in Source Code
+    Form, as described in Section 3.1, and You must inform recipients of
+    the Executable Form how they can obtain a copy of such Source Code
+    Form by reasonable means in a timely manner, at a charge no more
+    than the cost of distribution to the recipient; and
+
+(b) You may distribute such Executable Form under the terms of this
+    License, or sublicense it under different terms, provided that the
+    license for the Executable Form does not attempt to limit or alter
+    the recipients' rights in the Source Code Form under this License.
+
+3.3. Distribution of a Larger Work
+
+You may create and distribute a Larger Work under terms of Your choice,
+provided that You also comply with the requirements of this License for
+the Covered Software. If the Larger Work is a combination of Covered
+Software with a work governed by one or more Secondary Licenses, and the
+Covered Software is not Incompatible With Secondary Licenses, this
+License permits You to additionally distribute such Covered Software
+under the terms of such Secondary License(s), so that the recipient of
+the Larger Work may, at their option, further distribute the Covered
+Software under the terms of either this License or such Secondary
+License(s).
+
+3.4. Notices
+
+You may not remove or alter the substance of any license notices
+(including copyright notices, patent notices, disclaimers of warranty,
+or limitations of liability) contained within the Source Code Form of
+the Covered Software, except that You may alter any license notices to
+the extent required to remedy known factual inaccuracies.
+
+3.5. Application of Additional Terms
+
+You may choose to offer, and to charge a fee for, warranty, support,
+indemnity or liability obligations to one or more recipients of Covered
+Software. However, You may do so only on Your own behalf, and not on
+behalf of any Contributor. You must make it absolutely clear that any
+such warranty, support, indemnity, or liability obligation is offered by
+You alone, and You hereby agree to indemnify every Contributor for any
+liability incurred by such Contributor as a result of warranty, support,
+indemnity or liability terms You offer. You may include additional
+disclaimers of warranty and limitations of liability specific to any
+jurisdiction.
+
+4. Inability to Comply Due to Statute or Regulation
+---------------------------------------------------
+
+If it is impossible for You to comply with any of the terms of this
+License with respect to some or all of the Covered Software due to
+statute, judicial order, or regulation then You must: (a) comply with
+the terms of this License to the maximum extent possible; and (b)
+describe the limitations and the code they affect. Such description must
+be placed in a text file included with all distributions of the Covered
+Software under this License. Except to the extent prohibited by statute
+or regulation, such description must be sufficiently detailed for a
+recipient of ordinary skill to be able to understand it.
+
+5. Termination
+--------------
+
+5.1. The rights granted under this License will terminate automatically
+if You fail to comply with any of its terms. However, if You become
+compliant, then the rights granted under this License from a particular
+Contributor are reinstated (a) provisionally, unless and until such
+Contributor explicitly and finally terminates Your grants, and (b) on an
+ongoing basis, if such Contributor fails to notify You of the
+non-compliance by some reasonable means prior to 60 days after You have
+come back into compliance. Moreover, Your grants from a particular
+Contributor are reinstated on an ongoing basis if such Contributor
+notifies You of the non-compliance by some reasonable means, this is the
+first time You have received notice of non-compliance with this License
+from such Contributor, and You become compliant prior to 30 days after
+Your receipt of the notice.
+
+5.2. If You initiate litigation against any entity by asserting a patent
+infringement claim (excluding declaratory judgment actions,
+counter-claims, and cross-claims) alleging that a Contributor Version
+directly or indirectly infringes any patent, then the rights granted to
+You by any and all Contributors for the Covered Software under Section
+2.1 of this License shall terminate.
+
+5.3. In the event of termination under Sections 5.1 or 5.2 above, all
+end user license agreements (excluding distributors and resellers) which
+have been validly granted by You or Your distributors under this License
+prior to termination shall survive termination.
+
+************************************************************************
+*                                                                      *
+*  6. Disclaimer of Warranty                                           *
+*  -------------------------                                           *
+*                                                                      *
+*  Covered Software is provided under this License on an "as is"       *
+*  basis, without warranty of any kind, either expressed, implied, or  *
+*  statutory, including, without limitation, warranties that the       *
+*  Covered Software is free of defects, merchantable, fit for a        *
+*  particular purpose or non-infringing. The entire risk as to the     *
+*  quality and performance of the Covered Software is with You.        *
+*  Should any Covered Software prove defective in any respect, You     *
+*  (not any Contributor) assume the cost of any necessary servicing,   *
+*  repair, or correction. This disclaimer of warranty constitutes an   *
+*  essential part of this License. No use of any Covered Software is   *
+*  authorized under this License except under this disclaimer.         *
+*                                                                      *
+************************************************************************
+
+************************************************************************
+*                                                                      *
+*  7. Limitation of Liability                                          *
+*  --------------------------                                          *
+*                                                                      *
+*  Under no circumstances and under no legal theory, whether tort      *
+*  (including negligence), contract, or otherwise, shall any           *
+*  Contributor, or anyone who distributes Covered Software as          *
+*  permitted above, be liable to You for any direct, indirect,         *
+*  special, incidental, or consequential damages of any character      *
+*  including, without limitation, damages for lost profits, loss of    *
+*  goodwill, work stoppage, computer failure or malfunction, or any    *
+*  and all other commercial damages or losses, even if such party      *
+*  shall have been informed of the possibility of such damages. This   *
+*  limitation of liability shall not apply to liability for death or   *
+*  personal injury resulting from such party's negligence to the       *
+*  extent applicable law prohibits such limitation. Some               *
+*  jurisdictions do not allow the exclusion or limitation of           *
+*  incidental or consequential damages, so this exclusion and          *
+*  limitation may not apply to You.                                    *
+*                                                                      *
+************************************************************************
+
+8. Litigation
+-------------
+
+Any litigation relating to this License may be brought only in the
+courts of a jurisdiction where the defendant maintains its principal
+place of business and such litigation shall be governed by laws of that
+jurisdiction, without reference to its conflict-of-law provisions.
+Nothing in this Section shall prevent a party's ability to bring
+cross-claims or counter-claims.
+
+9. Miscellaneous
+----------------
+
+This License represents the complete agreement concerning the subject
+matter hereof. If any provision of this License is held to be
+unenforceable, such provision shall be reformed only to the extent
+necessary to make it enforceable. Any law or regulation which provides
+that the language of a contract shall be construed against the drafter
+shall not be used to construe this License against a Contributor.
+
+10. Versions of the License
+---------------------------
+
+10.1. New Versions
+
+Mozilla Foundation is the license steward. Except as provided in Section
+10.3, no one other than the license steward has the right to modify or
+publish new versions of this License. Each version will be given a
+distinguishing version number.
+
+10.2. Effect of New Versions
+
+You may distribute the Covered Software under the terms of the version
+of the License under which You originally received the Covered Software,
+or under the terms of any subsequent version published by the license
+steward.
+
+10.3. Modified Versions
+
+If you create software not governed by this License, and you want to
+create a new license for such software, you may create and use a
+modified version of this License if you rename the license and remove
+any references to the name of the license steward (except to note that
+such modified license differs from this License).
+
+10.4. Distributing Source Code Form that is Incompatible With Secondary
+Licenses
+
+If You choose to distribute Source Code Form that is Incompatible With
+Secondary Licenses under the terms of this version of the License, the
+notice described in Exhibit B of this License must be attached.
+
+Exhibit A - Source Code Form License Notice
+-------------------------------------------
+
+  This Source Code Form is subject to the terms of the Mozilla Public
+  License, v. 2.0. If a copy of the MPL was not distributed with this
+  file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+If it is not possible or desirable to put the notice in a particular
+file, then You may include the notice in a location (such as a LICENSE
+file in a relevant directory) where a recipient would be likely to look
+for such a notice.
+
+You may add additional accurate notices of copyright ownership.
+
+Exhibit B - "Incompatible With Secondary Licenses" Notice
+---------------------------------------------------------
+
+  This Source Code Form is "Incompatible With Secondary Licenses", as
+  defined by the Mozilla Public License, v. 2.0.
diff --git a/toolkit/components/nimbus/schemas/NimbusEnrollment.schema.json b/toolkit/components/nimbus/schemas/NimbusEnrollment.schema.json
new file mode 100644
index 0000000000..13d568b89c
--- /dev/null
+++ b/toolkit/components/nimbus/schemas/NimbusEnrollment.schema.json
@@ -0,0 +1,226 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$ref": "#/definitions/NimbusEnrollment",
+  "definitions": {
+    "NimbusEnrollment": {
+      "type": "object",
+      "properties": {
+        "slug": {
+          "type": "string",
+          "description": "Unique identifier for the experiment"
+        },
+        "userFacingName": {
+          "type": "string",
+          "description": "Public name of the experiment displayed on \"about:studies\""
+        },
+        "userFacingDescription": {
+          "type": "string",
+          "description": "Short public description of the experiment displayed on on \"about:studies\""
+        },
+        "isRollout": {
+          "type": "boolean",
+          "description": "When this property is set to true, treat this experiment as a rollout. Rollouts are currently handled as single-branch experiments separated from the bucketing namespace for normal experiments. See also: https://mozilla-hub.atlassian.net/browse/SDK-405"
+        },
+        "featureIds": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          },
+          "description": "A list of featureIds the experiment contains configurations for."
+        },
+        "branch": {
+          "anyOf": [
+            {
+              "type": "object",
+              "properties": {
+                "slug": {
+                  "type": "string",
+                  "description": "Identifier for the branch"
+                },
+                "feature": {
+                  "type": "object",
+                  "properties": {
+                    "featureId": {
+                      "type": "string",
+                      "description": "The identifier for the feature flag"
+                    },
+                    "value": {
+                      "type": "object",
+                      "additionalProperties": {},
+                      "description": "Optional extra params for the feature (this should be validated against a schema)"
+                    }
+                  },
+                  "required": [
+                    "featureId",
+                    "value"
+                  ],
+                  "description": "A single feature configuration"
+                }
+              },
+              "required": [
+                "slug",
+                "feature"
+              ]
+            },
+            {
+              "type": "object",
+              "properties": {
+                "slug": {
+                  "type": "string",
+                  "description": "Identifier for the branch"
+                },
+                "feature": {
+                  "type": "object",
+                  "properties": {
+                    "featureId": {
+                      "type": "string",
+                      "const": "unused-feature-id-for-legacy-support"
+                    },
+                    "enabled": {
+                      "type": "boolean",
+                      "const": false
+                    },
+                    "value": {
+                      "type": "object",
+                      "additionalProperties": {}
+                    }
+                  },
+                  "required": [
+                    "featureId",
+                    "enabled",
+                    "value"
+                  ],
+                  "description": "The feature key must be provided with valid values to prevent crashes if the DTO is encountered by Desktop clients earlier than version 95."
+                },
+                "features": {
+                  "type": "array",
+                  "items": {
+                    "type": "object",
+                    "properties": {
+                      "featureId": {
+                        "type": "string",
+                        "description": "The identifier for the feature flag"
+                      },
+                      "value": {
+                        "type": "object",
+                        "additionalProperties": {},
+                        "description": "Optional extra params for the feature (this should be validated against a schema)"
+                      }
+                    },
+                    "required": [
+                      "featureId",
+                      "value"
+                    ]
+                  },
+                  "description": "An array of feature configurations"
+                }
+              },
+              "required": [
+                "slug",
+                "feature",
+                "features"
+              ]
+            },
+            {
+              "type": "object",
+              "properties": {
+                "slug": {
+                  "type": "string",
+                  "description": "Identifier for the branch"
+                },
+                "features": {
+                  "type": "array",
+                  "items": {
+                    "type": "object",
+                    "properties": {
+                      "featureId": {
+                        "type": "string",
+                        "description": "The identifier for the feature flag"
+                      },
+                      "value": {
+                        "type": "object",
+                        "additionalProperties": {},
+                        "description": "Optional extra params for the feature (this should be validated against a schema)"
+                      }
+                    },
+                    "required": [
+                      "featureId",
+                      "value"
+                    ]
+                  },
+                  "description": "An array of feature configurations"
+                }
+              },
+              "required": [
+                "slug",
+                "features"
+              ]
+            }
+          ],
+          "description": "Branch configuration for the experiment"
+        },
+        "experimentType": {
+          "type": "string",
+          "description": "What kind of experiment this enrollment corresponds to."
+        },
+        "enrollmentId": {
+          "type": "string",
+          "description": "A unique identifier for the enrollment."
+        },
+        "active": {
+          "type": "boolean",
+          "description": "Whether or not the enrollment is active."
+        },
+        "lastSeen": {
+          "type": "string",
+          "format": "date-time",
+          "description": "The last time the experiment was seen."
+        },
+        "force": {
+          "type": "boolean",
+          "description": "Whether or not this was a force enrollment."
+        },
+        "prefs": {
+          "type": "array",
+          "description": "Information about prefs set by this enrollment.",
+          "items": {
+            "type": "object",
+            "properties": {
+              "name": {
+                "type": "string",
+                "description": "The name of the pref that was set."
+              },
+              "featureId": {
+                "type": "string",
+                "description": "The ID of the feature that owns the variable that set this pref."
+              },
+              "variable": {
+                "type": "string",
+                "description": "The variable that set this pref."
+              },
+              "branch": {
+                "type": "string",
+                "enum": ["user", "default"],
+                "description": "The branch the pref was set on."
+              },
+              "originalValue": {
+                "description": "The original value before the experiment."
+              }
+            },
+            "additionalProperties": false
+          }
+        }
+      },
+      "required": [
+        "slug",
+        "userFacingName",
+        "userFacingDescription",
+        "branch",
+        "enrollmentId",
+        "active",
+        "lastSeen"
+      ],
+      "description": "An enrollment in a Nimbus Experiment saved to disk"
+    }
+  }
+}
diff --git a/toolkit/components/nimbus/schemas/NimbusExperiment.schema.json b/toolkit/components/nimbus/schemas/NimbusExperiment.schema.json
new file mode 100644
index 0000000000..2184402760
--- /dev/null
+++ b/toolkit/components/nimbus/schemas/NimbusExperiment.schema.json
@@ -0,0 +1,339 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "$ref": "#/definitions/NimbusExperiment",
+  "definitions": {
+    "NimbusExperiment": {
+      "type": "object",
+      "properties": {
+        "schemaVersion": {
+          "type": "string",
+          "description": "Version of the NimbusExperiment schema this experiment refers to"
+        },
+        "slug": {
+          "type": "string",
+          "description": "Unique identifier for the experiment"
+        },
+        "id": {
+          "type": "string",
+          "description": "Unique identifier for the experiment. This is a duplicate of slug, but is a required field for all Remote Settings records."
+        },
+        "appName": {
+          "type": "string",
+          "description": "A slug identifying the targeted product for this experiment. It should be a lowercase_with_underscores name that is short and unambiguous and it should match the app_name found in https://probeinfo.telemetry.mozilla.org/glean/repositories. Examples are \"fenix\" or \"firefox_desktop\"."
+        },
+        "appId": {
+          "type": "string",
+          "description": "The platform identifier for the targeted app. The app's identifier exactly as it appears in the relevant app store listing (for relevant platforms) or in the app's Glean initialization call (for other platforms). Examples are \"org.mozilla.firefox_beta\" or \"firefox-desktop\"."
+        },
+        "channel": {
+          "type": "string",
+          "description": "A specific channel of an application such as \"nightly\", \"beta\", or \"release\""
+        },
+        "userFacingName": {
+          "type": "string",
+          "description": "Public name of the experiment displayed on \"about:studies\""
+        },
+        "userFacingDescription": {
+          "type": "string",
+          "description": "Short public description of the experiment displayed on on \"about:studies\""
+        },
+        "isEnrollmentPaused": {
+          "type": "boolean",
+          "description": "When this property is set to true, the the SDK should not enroll new users into the experiment that have not already been enrolled."
+        },
+        "isRollout": {
+          "type": "boolean",
+          "description": "When this property is set to true, treat this experiment as a rollout. Rollouts are currently handled as single-branch experiments separated from the bucketing namespace for normal experiments. See also: https://mozilla-hub.atlassian.net/browse/SDK-405"
+        },
+        "bucketConfig": {
+          "type": "object",
+          "properties": {
+            "randomizationUnit": {
+              "type": "string",
+              "description": "A unique, stable identifier for the user used as an input to bucket hashing"
+            },
+            "namespace": {
+              "type": "string",
+              "description": "Additional inputs to the hashing function"
+            },
+            "start": {
+              "type": "integer",
+              "description": "Index of start of the range of buckets"
+            },
+            "count": {
+              "type": "integer",
+              "description": "Number of buckets to check"
+            },
+            "total": {
+              "type": "integer",
+              "description": "Total number of buckets. You can assume this will always be 10000.",
+              "default": 10000
+            }
+          },
+          "required": [
+            "randomizationUnit",
+            "namespace",
+            "start",
+            "count",
+            "total"
+          ],
+          "description": "Bucketing configuration"
+        },
+        "outcomes": {
+          "type": "array",
+          "items": {
+            "type": "object",
+            "properties": {
+              "slug": {
+                "type": "string",
+                "description": "Identifier for the outcome"
+              },
+              "priority": {
+                "type": "string",
+                "description": "e.g. \"primary\" or \"secondary\""
+              }
+            },
+            "required": [
+              "slug",
+              "priority"
+            ]
+          },
+          "description": "A list of outcomes relevant to the experiment analysis."
+        },
+        "featureIds": {
+          "type": "array",
+          "items": {
+            "type": "string"
+          },
+          "description": "A list of featureIds the experiment contains configurations for."
+        },
+        "branches": {
+          "anyOf": [
+            {
+              "type": "array",
+              "items": {
+                "type": "object",
+                "properties": {
+                  "slug": {
+                    "type": "string",
+                    "description": "Identifier for the branch"
+                  },
+                  "ratio": {
+                    "type": "integer",
+                    "description": "Relative ratio of population for the branch (e.g. if branch A=1 and branch B=3, branch A would get 25% of the population)",
+                    "default": 1
+                  },
+                  "feature": {
+                    "type": "object",
+                    "properties": {
+                      "featureId": {
+                        "type": "string",
+                        "description": "The identifier for the feature flag"
+                      },
+                      "value": {
+                        "type": "object",
+                        "additionalProperties": {},
+                        "description": "Optional extra params for the feature (this should be validated against a schema)"
+                      }
+                    },
+                    "required": [
+                      "featureId",
+                      "value"
+                    ],
+                    "description": "A single feature configuration"
+                  }
+                },
+                "required": [
+                  "slug",
+                  "ratio",
+                  "feature"
+                ]
+              }
+            },
+            {
+              "type": "array",
+              "items": {
+                "type": "object",
+                "properties": {
+                  "slug": {
+                    "type": "string",
+                    "description": "Identifier for the branch"
+                  },
+                  "ratio": {
+                    "type": "integer",
+                    "description": "Relative ratio of population for the branch (e.g. if branch A=1 and branch B=3, branch A would get 25% of the population)",
+                    "default": 1
+                  },
+                  "feature": {
+                    "type": "object",
+                    "properties": {
+                      "featureId": {
+                        "type": "string",
+                        "const": "unused-feature-id-for-legacy-support"
+                      },
+                      "enabled": {
+                        "type": "boolean",
+                        "const": false
+                      },
+                      "value": {
+                        "type": "object",
+                        "additionalProperties": {}
+                      }
+                    },
+                    "required": [
+                      "featureId",
+                      "enabled",
+                      "value"
+                    ],
+                    "description": "The feature key must be provided with valid values to prevent crashes if the DTO is encountered by Desktop clients earlier than version 95."
+                  },
+                  "features": {
+                    "type": "array",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "featureId": {
+                          "type": "string",
+                          "description": "The identifier for the feature flag"
+                        },
+                        "value": {
+                          "type": "object",
+                          "additionalProperties": {},
+                          "description": "Optional extra params for the feature (this should be validated against a schema)"
+                        }
+                      },
+                      "required": [
+                        "featureId",
+                        "value"
+                      ]
+                    },
+                    "description": "An array of feature configurations"
+                  }
+                },
+                "required": [
+                  "slug",
+                  "ratio",
+                  "feature",
+                  "features"
+                ]
+              }
+            },
+            {
+              "type": "array",
+              "items": {
+                "type": "object",
+                "properties": {
+                  "slug": {
+                    "type": "string",
+                    "description": "Identifier for the branch"
+                  },
+                  "ratio": {
+                    "type": "integer",
+                    "description": "Relative ratio of population for the branch (e.g. if branch A=1 and branch B=3, branch A would get 25% of the population)",
+                    "default": 1
+                  },
+                  "features": {
+                    "type": "array",
+                    "items": {
+                      "type": "object",
+                      "properties": {
+                        "featureId": {
+                          "type": "string",
+                          "description": "The identifier for the feature flag"
+                        },
+                        "value": {
+                          "type": "object",
+                          "additionalProperties": {},
+                          "description": "Optional extra params for the feature (this should be validated against a schema)"
+                        }
+                      },
+                      "required": [
+                        "featureId",
+                        "value"
+                      ]
+                    },
+                    "description": "An array of feature configurations"
+                  }
+                },
+                "required": [
+                  "slug",
+                  "ratio",
+                  "features"
+                ]
+              }
+            }
+          ],
+          "description": "Branch configuration for the experiment"
+        },
+        "targeting": {
+          "type": [
+            "string",
+            "null"
+          ],
+          "description": "JEXL expression used to filter experiments based on locale, geo, etc."
+        },
+        "startDate": {
+          "type": [
+            "string",
+            "null"
+          ],
+          "description": "Actual publish date of the experiment Note that this value is expected to be null in Remote Settings.",
+          "format": "date"
+        },
+        "enrollmentEndDate": {
+          "type": [
+            "string",
+            "null"
+          ],
+          "description": "Actual enrollment end date of the experiment. Note that this value is expected to be null in Remote Settings.",
+          "format": "date"
+        },
+        "endDate": {
+          "type": [
+            "string",
+            "null"
+          ],
+          "description": "Actual end date of the experiment. Note that this value is expected to be null in Remote Settings.",
+          "format": "date"
+        },
+        "proposedDuration": {
+          "type": "integer",
+          "description": "Duration of the experiment from the start date in days. Note that this property is only used during the analysis phase (not by the SDK)"
+        },
+        "proposedEnrollment": {
+          "type": "integer",
+          "description": "This represents the number of days that we expect to enroll new users. Note that this property is only used during the analysis phase (not by the SDK)"
+        },
+        "referenceBranch": {
+          "type": [
+            "string",
+            "null"
+          ],
+          "description": "The slug of the reference branch (that is, which branch we consider \"control\")"
+        },
+        "featureValidationOptOut": {
+          "type": "boolean",
+          "description": "Opt out of feature schema validation. Only supported on desktop."
+        }
+      },
+      "required": [
+        "schemaVersion",
+        "slug",
+        "id",
+        "appName",
+        "appId",
+        "channel",
+        "userFacingName",
+        "userFacingDescription",
+        "isEnrollmentPaused",
+        "bucketConfig",
+        "branches",
+        "startDate",
+        "endDate",
+        "proposedEnrollment",
+        "referenceBranch"
+      ],
+      "description": "The experiment definition accessible to: 1. The Nimbus SDK via Remote Settings 2. Jetstream via the Experimenter API"
+    }
+  }
+}
diff --git a/toolkit/components/nimbus/schemas/moz.yaml b/toolkit/components/nimbus/schemas/moz.yaml
new file mode 100644
index 0000000000..5b3bd46af5
--- /dev/null
+++ b/toolkit/components/nimbus/schemas/moz.yaml
@@ -0,0 +1,31 @@
+schema: 1
+
+bugzilla:
+  product: "Toolkit"
+  component: "Nimbus Desktop Client"
+
+origin:
+  name: "nimbus-shared"
+  description: "Shared data and schemas for Project Nimbus"
+  url: "https://github.com/mozilla/nimbus-shared"
+  license: "MPL-2.0"
+  release: "version 1.10.0"
+  revision: "v1.10.0"
+
+vendoring:
+  url: "https://github.com/mozilla/nimbus-shared"
+  source-hosting: "github"
+  tracking: "tag"
+  skip-vendoring-steps:
+    - "fetch"
+    - "update-moz-build"
+
+  keep:
+   - "*.schema.json"
+   - "vendor.sh"
+
+  update-actions:
+    - action: "run-script"
+      script: "vendor.sh"
+      cwd: "{yaml_dir}"
+      args: ["{revision}"]
diff --git a/toolkit/components/nimbus/schemas/vendor.sh b/toolkit/components/nimbus/schemas/vendor.sh
new file mode 100644
index 0000000000..de0f5b5ca6
--- /dev/null
+++ b/toolkit/components/nimbus/schemas/vendor.sh
@@ -0,0 +1,31 @@
+#!/bin/bash
+set -euo pipefail
+
+ # Path to mach relative to toolkit/components/nimbus/schemas/
+MACH=$(realpath "../../../../mach")
+
+if [[ $(uname -a) == *MSYS* ]]; then
+  MACH="python ${MACH}"
+fi
+
+NPM="${MACH} npm"
+
+# Strip the leading v from the tag to get the version number.
+TAG="$1"
+VERSION="${TAG:1}"
+NAMESPACE="@mozilla/"
+PACKAGE="nimbus-shared"
+URL="https://registry.npmjs.org/${NAMESPACE}${PACKAGE}/-/${PACKAGE}-${VERSION}.tgz"
+
+mkdir -p tmp
+cd tmp
+
+curl --proto '=https' --tlsv1.2 -sSf "${URL}" | tar -xzf - --strip-components 1
+
+cp "schemas/experiments/NimbusExperiment.json" "../NimbusExperiment.schema.json"
+cd ..
+
+# Ensure the generated file ends with a newline
+sed -i -e '$a\' NimbusExperiment.schema.json
+
+rm -rf tmp