Merging upstream version 126.0.

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

6 files changed, 317 insertions, 265 deletions

diff --git a/browser/components/asrouter/content-src/asrouter-utils.mjs b/browser/components/asrouter/content-src/asrouter-utils.mjs
index 989d864e71..3789158547 100644
--- a/browser/components/asrouter/content-src/asrouter-utils.mjs
+++ b/browser/components/asrouter/content-src/asrouter-utils.mjs
@@ -2,10 +2,8 @@
  * 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/. */
 
-// eslint-disable-next-line mozilla/reject-import-system-module-from-non-system
-import { MESSAGE_TYPE_HASH as msg } from "../modules/ActorConstants.sys.mjs";
-// eslint-disable-next-line mozilla/reject-import-system-module-from-non-system
-import { actionCreators as ac } from "../../newtab/common/Actions.sys.mjs";
+import { MESSAGE_TYPE_HASH as msg } from "../modules/ActorConstants.mjs";
+import { actionCreators as ac } from "../../newtab/common/Actions.mjs";
 
 export const ASRouterUtils = {
   addListener(listener) {
diff --git a/browser/components/asrouter/content-src/components/ASRouterAdmin/ASRouterAdmin.jsx b/browser/components/asrouter/content-src/components/ASRouterAdmin/ASRouterAdmin.jsx
index befce707ef..32d1614307 100644
--- a/browser/components/asrouter/content-src/components/ASRouterAdmin/ASRouterAdmin.jsx
+++ b/browser/components/asrouter/content-src/components/ASRouterAdmin/ASRouterAdmin.jsx
@@ -15,6 +15,18 @@ const Row = props => (
   </tr>
 );
 
+// Convert a UTF-8 string to a string in which only one byte of each
+// 16-bit unit is occupied. This is necessary to comply with `btoa` API constraints.
+export function toBinary(string) {
+  const codeUnits = new Uint16Array(string.length);
+  for (let i = 0; i < codeUnits.length; i++) {
+    codeUnits[i] = string.charCodeAt(i);
+  }
+  return btoa(
+    String.fromCharCode(...Array.from(new Uint8Array(codeUnits.buffer)))
+  );
+}
+
 function relativeTime(timestamp) {
   if (!timestamp) {
     return "";
@@ -531,7 +543,9 @@ export class ASRouterAdminInner extends React.PureComponent {
           {aboutMessagePreviewSupported ? (
             <CopyButton
               transformer={text =>
-                `about:messagepreview?json=${encodeURIComponent(btoa(text))}`
+                `about:messagepreview?json=${encodeURIComponent(
+                  toBinary(text)
+                )}`
               }
               label="Share"
               copiedLabel="Copied!"
diff --git a/browser/components/asrouter/content-src/schemas/BackgroundTaskMessagingExperiment.schema.json b/browser/components/asrouter/content-src/schemas/BackgroundTaskMessagingExperiment.schema.json
index 9de01052f7..5fe86f9617 100644
--- a/browser/components/asrouter/content-src/schemas/BackgroundTaskMessagingExperiment.schema.json
+++ b/browser/components/asrouter/content-src/schemas/BackgroundTaskMessagingExperiment.schema.json
@@ -10,7 +10,9 @@
         "const": "multi"
       }
     },
-    "required": ["template"]
+    "required": [
+      "template"
+    ]
   },
   "then": {
     "$ref": "chrome://browser/content/asrouter/schemas/BackgroundTaskMessagingExperiment.schema.json#/$defs/MultiMessage"
@@ -68,7 +70,9 @@
                   "type": "object"
                 }
               },
-              "required": ["type"],
+              "required": [
+                "type"
+              ],
               "additionalProperties": true
             },
             "requireInteraction": {
@@ -116,24 +120,37 @@
                         "type": "object"
                       }
                     },
-                    "required": ["type"],
+                    "required": [
+                      "type"
+                    ],
                     "additionalProperties": true
                   }
                 },
-                "required": ["action", "title"],
+                "required": [
+                  "action",
+                  "title"
+                ],
                 "additionalProperties": true
               }
             }
           },
           "additionalProperties": true,
-          "required": ["title", "body"]
+          "required": [
+            "title",
+            "body"
+          ]
         },
         "template": {
           "type": "string",
           "const": "toast_notification"
         }
       },
-      "required": ["content", "targeting", "template", "trigger"],
+      "required": [
+        "content",
+        "targeting",
+        "template",
+        "trigger"
+      ],
       "additionalProperties": true
     },
     "Message": {
@@ -154,7 +171,9 @@
         "template": {
           "type": "string",
           "description": "Which messaging template this message is using.",
-          "enum": ["toast_notification"]
+          "enum": [
+            "toast_notification"
+          ]
         },
         "frequency": {
           "type": "object",
@@ -184,7 +203,10 @@
                     "maximum": 100
                   }
                 },
-                "required": ["period", "cap"]
+                "required": [
+                  "period",
+                  "cap"
+                ]
               }
             }
           }
@@ -224,7 +246,9 @@
               }
             }
           },
-          "required": ["id"]
+          "required": [
+            "id"
+          ]
         },
         "provider": {
           "description": "An identifier for the provider of this message, such as \"cfr\" or \"preview\".",
@@ -233,8 +257,14 @@
       },
       "additionalProperties": true,
       "dependentRequired": {
-        "content": ["id", "template"],
-        "template": ["id", "content"]
+        "content": [
+          "id",
+          "template"
+        ],
+        "template": [
+          "id",
+          "content"
+        ]
       }
     },
     "localizedText": {
@@ -245,7 +275,9 @@
           "type": "string"
         }
       },
-      "required": ["string_id"]
+      "required": [
+        "string_id"
+      ]
     },
     "localizableText": {
       "description": "Either a raw string or an object containing the string_id of the localized text",
@@ -272,10 +304,14 @@
             "properties": {
               "template": {
                 "type": "string",
-                "enum": ["toast_notification"]
+                "enum": [
+                  "toast_notification"
+                ]
               }
             },
-            "required": ["template"]
+            "required": [
+              "template"
+            ]
           },
           "then": {
             "$ref": "chrome://browser/content/asrouter/schemas/BackgroundTaskMessagingExperiment.schema.json#/$defs/ToastNotification"
@@ -299,7 +335,10 @@
           }
         }
       },
-      "required": ["template", "messages"]
+      "required": [
+        "template",
+        "messages"
+      ]
     }
   }
 }
diff --git a/browser/components/asrouter/content-src/schemas/MessagingExperiment.schema.json b/browser/components/asrouter/content-src/schemas/MessagingExperiment.schema.json
index fbabb109f8..dd4ce4776d 100644
--- a/browser/components/asrouter/content-src/schemas/MessagingExperiment.schema.json
+++ b/browser/components/asrouter/content-src/schemas/MessagingExperiment.schema.json
@@ -10,7 +10,9 @@
         "const": "multi"
       }
     },
-    "required": ["template"]
+    "required": [
+      "template"
+    ]
   },
   "then": {
     "$ref": "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json#/$defs/MultiMessage"
@@ -41,7 +43,9 @@
             "layout": {
               "type": "string",
               "description": "Describes how content should be displayed.",
-              "enum": ["chiclet_open_url"]
+              "enum": [
+                "chiclet_open_url"
+              ]
             },
             "bucket_id": {
               "type": "string",
@@ -66,11 +70,17 @@
                 "where": {
                   "description": "Should it open in a new tab or the current tab",
                   "type": "string",
-                  "enum": ["current", "tabshifted"]
+                  "enum": [
+                    "current",
+                    "tabshifted"
+                  ]
                 }
               },
               "additionalProperties": true,
-              "required": ["url", "where"]
+              "required": [
+                "url",
+                "where"
+              ]
             }
           },
           "additionalProperties": true,
@@ -87,7 +97,10 @@
           "const": "cfr_urlbar_chiclet"
         }
       },
-      "required": ["targeting", "trigger"]
+      "required": [
+        "targeting",
+        "trigger"
+      ]
     },
     "ExtensionDoorhanger": {
       "$schema": "https://json-schema.org/draft/2019-09/schema",
@@ -162,10 +175,14 @@
                               "description": "Text for button tooltip used to provide information about the doorhanger."
                             }
                           },
-                          "required": ["tooltiptext"]
+                          "required": [
+                            "tooltiptext"
+                          ]
                         }
                       },
-                      "required": ["attributes"]
+                      "required": [
+                        "attributes"
+                      ]
                     },
                     {
                       "$ref": "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json#/$defs/localizedText"
@@ -185,7 +202,10 @@
             "learn_more": {
               "type": "string",
               "description": "Last part of the path in the SUMO URL to the support page with the information about the doorhanger.",
-              "examples": ["extensionpromotions", "extensionrecommendations"]
+              "examples": [
+                "extensionpromotions",
+                "extensionrecommendations"
+              ]
             },
             "heading_text": {
               "$ref": "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json#/$defs/localizableText",
@@ -236,7 +256,12 @@
                   "description": "Link that offers more information related to the addon."
                 }
               },
-              "required": ["title", "author", "icon", "amo_url"]
+              "required": [
+                "title",
+                "author",
+                "icon",
+                "amo_url"
+              ]
             },
             "text": {
               "$ref": "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json#/$defs/localizableText",
@@ -255,7 +280,9 @@
                   }
                 }
               },
-              "required": ["steps"]
+              "required": [
+                "steps"
+              ]
             },
             "buttons": {
               "description": "The label and functionality for the buttons in the pop-over.",
@@ -281,11 +308,16 @@
                                   "description": "A single character to be used as a shortcut key for the secondary button. This should be one of the characters that appears in the button label."
                                 }
                               },
-                              "required": ["accesskey"],
+                              "required": [
+                                "accesskey"
+                              ],
                               "description": "Button attributes."
                             }
                           },
-                          "required": ["value", "attributes"]
+                          "required": [
+                            "value",
+                            "attributes"
+                          ]
                         },
                         {
                           "$ref": "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json#/$defs/localizedText"
@@ -341,11 +373,16 @@
                                     "description": "A single character to be used as a shortcut key for the secondary button. This should be one of the characters that appears in the button label."
                                   }
                                 },
-                                "required": ["accesskey"],
+                                "required": [
+                                  "accesskey"
+                                ],
                                 "description": "Button attributes."
                               }
                             },
-                            "required": ["value", "attributes"]
+                            "required": [
+                              "value",
+                              "attributes"
+                            ]
                           },
                           {
                             "properties": {
@@ -360,7 +397,9 @@
                                 ]
                               }
                             },
-                            "required": ["string_id"]
+                            "required": [
+                              "string_id"
+                            ]
                           }
                         ],
                         "description": "Id of localized string or message override."
@@ -417,16 +456,25 @@
             }
           },
           "then": {
-            "required": ["category", "notification_text"]
+            "required": [
+              "category",
+              "notification_text"
+            ]
           }
         },
         "template": {
           "type": "string",
-          "enum": ["cfr_doorhanger", "milestone_message"]
+          "enum": [
+            "cfr_doorhanger",
+            "milestone_message"
+          ]
         }
       },
       "additionalProperties": true,
-      "required": ["targeting", "trigger"],
+      "required": [
+        "targeting",
+        "trigger"
+      ],
       "$defs": {
         "plainText": {
           "description": "Plain text (no HTML allowed)",
@@ -457,7 +505,10 @@
             "type": {
               "type": "string",
               "description": "Should the message be global (persisted across tabs) or local (disappear when switching to a different tab).",
-              "enum": ["global", "tab"]
+              "enum": [
+                "global",
+                "tab"
+              ]
             },
             "text": {
               "$ref": "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json#/$defs/localizableText",
@@ -497,7 +548,9 @@
                         "type": "object"
                       }
                     },
-                    "required": ["type"],
+                    "required": [
+                      "type"
+                    ],
                     "additionalProperties": true
                   },
                   "supportPage": {
@@ -505,13 +558,19 @@
                     "description": "A page title on SUMO to link to"
                   }
                 },
-                "required": ["label", "action"],
+                "required": [
+                  "label",
+                  "action"
+                ],
                 "additionalProperties": true
               }
             }
           },
           "additionalProperties": true,
-          "required": ["text", "buttons"]
+          "required": [
+            "text",
+            "buttons"
+          ]
         },
         "template": {
           "type": "string",
@@ -519,7 +578,10 @@
         }
       },
       "additionalProperties": true,
-      "required": ["targeting", "trigger"],
+      "required": [
+        "targeting",
+        "trigger"
+      ],
       "$defs": {
         "plainText": {
           "description": "Plain text (no HTML allowed)",
@@ -587,12 +649,22 @@
             "promoType": {
               "type": "string",
               "description": "Promo type used to determine if promo should show to a given user",
-              "enum": ["FOCUS", "VPN", "PIN", "COOKIE_BANNERS", "OTHER"]
+              "enum": [
+                "FOCUS",
+                "VPN",
+                "PIN",
+                "COOKIE_BANNERS",
+                "OTHER"
+              ]
             },
             "promoSectionStyle": {
               "type": "string",
               "description": "Sets the position of the promo section. Possible values are: top, below-search, bottom. Default bottom.",
-              "enum": ["top", "below-search", "bottom"]
+              "enum": [
+                "top",
+                "below-search",
+                "bottom"
+              ]
             },
             "promoTitle": {
               "type": "string",
@@ -624,16 +696,23 @@
                       "type": "object"
                     }
                   },
-                  "required": ["type"],
+                  "required": [
+                    "type"
+                  ],
                   "additionalProperties": true
                 }
               },
-              "required": ["action"]
+              "required": [
+                "action"
+              ]
             },
             "promoLinkType": {
               "type": "string",
               "description": "Type of promo link type. Possible values: link, button. Default is link.",
-              "enum": ["link", "button"]
+              "enum": [
+                "link",
+                "button"
+              ]
             },
             "promoImageLarge": {
               "type": "string",
@@ -655,10 +734,14 @@
                     "const": true
                   }
                 },
-                "required": ["promoEnabled"]
+                "required": [
+                  "promoEnabled"
+                ]
               },
               "then": {
-                "required": ["promoButton"]
+                "required": [
+                  "promoButton"
+                ]
               }
             },
             {
@@ -668,20 +751,28 @@
                     "const": true
                   }
                 },
-                "required": ["infoEnabled"]
+                "required": [
+                  "infoEnabled"
+                ]
               },
               "then": {
-                "required": ["infoLinkText"],
+                "required": [
+                  "infoLinkText"
+                ],
                 "if": {
                   "properties": {
                     "infoTitleEnabled": {
                       "const": true
                     }
                   },
-                  "required": ["infoTitleEnabled"]
+                  "required": [
+                    "infoTitleEnabled"
+                  ]
                 },
                 "then": {
-                  "required": ["infoTitle"]
+                  "required": [
+                    "infoTitle"
+                  ]
                 }
               }
             }
@@ -693,7 +784,9 @@
         }
       },
       "additionalProperties": true,
-      "required": ["targeting"]
+      "required": [
+        "targeting"
+      ]
     },
     "Spotlight": {
       "$schema": "https://json-schema.org/draft/2019-09/schema",
@@ -763,11 +856,16 @@
         "template": {
           "type": "string",
           "description": "Specify whether the surface is shown as a Spotlight modal or an in-surface Feature Callout dialog",
-          "enum": ["spotlight", "feature_callout"]
+          "enum": [
+            "spotlight",
+            "feature_callout"
+          ]
         }
       },
       "additionalProperties": true,
-      "required": ["targeting"]
+      "required": [
+        "targeting"
+      ]
     },
     "ToastNotification": {
       "$schema": "https://json-schema.org/draft/2019-09/schema",
@@ -818,7 +916,9 @@
                   "type": "object"
                 }
               },
-              "required": ["type"],
+              "required": [
+                "type"
+              ],
               "additionalProperties": true
             },
             "requireInteraction": {
@@ -866,24 +966,37 @@
                         "type": "object"
                       }
                     },
-                    "required": ["type"],
+                    "required": [
+                      "type"
+                    ],
                     "additionalProperties": true
                   }
                 },
-                "required": ["action", "title"],
+                "required": [
+                  "action",
+                  "title"
+                ],
                 "additionalProperties": true
               }
             }
           },
           "additionalProperties": true,
-          "required": ["title", "body"]
+          "required": [
+            "title",
+            "body"
+          ]
         },
         "template": {
           "type": "string",
           "const": "toast_notification"
         }
       },
-      "required": ["content", "targeting", "template", "trigger"],
+      "required": [
+        "content",
+        "targeting",
+        "template",
+        "trigger"
+      ],
       "additionalProperties": true
     },
     "ToolbarBadgeMessage": {
@@ -912,7 +1025,9 @@
                 }
               },
               "additionalProperties": true,
-              "required": ["id"],
+              "required": [
+                "id"
+              ],
               "description": "Optional action to take in addition to showing the notification"
             },
             "delay": {
@@ -925,7 +1040,9 @@
             }
           },
           "additionalProperties": true,
-          "required": ["target"]
+          "required": [
+            "target"
+          ]
         },
         "template": {
           "type": "string",
@@ -933,7 +1050,9 @@
         }
       },
       "additionalProperties": true,
-      "required": ["targeting"]
+      "required": [
+        "targeting"
+      ]
     },
     "UpdateAction": {
       "$schema": "https://json-schema.org/draft/2019-09/schema",
@@ -973,101 +1092,25 @@
               },
               "additionalProperties": true,
               "description": "Optional action to take in addition to showing the notification",
-              "required": ["id", "data"]
-            }
-          },
-          "additionalProperties": true,
-          "required": ["action"]
-        },
-        "template": {
-          "type": "string",
-          "const": "update_action"
-        }
-      },
-      "required": ["targeting"]
-    },
-    "WhatsNewMessage": {
-      "$schema": "https://json-schema.org/draft/2019-09/schema",
-      "$id": "file:///WhatsNewMessage.schema.json",
-      "title": "WhatsNewMessage",
-      "description": "A template for the messages that appear in the What's New panel.",
-      "allOf": [
-        {
-          "$ref": "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json#/$defs/Message"
-        }
-      ],
-      "type": "object",
-      "properties": {
-        "content": {
-          "type": "object",
-          "properties": {
-            "layout": {
-              "description": "Different message layouts",
-              "enum": ["tracking-protections"]
-            },
-            "bucket_id": {
-              "type": "string",
-              "description": "A bucket identifier for the addon. This is used in order to anonymize telemetry for history-sensitive targeting."
-            },
-            "published_date": {
-              "type": "integer",
-              "description": "The date/time (number of milliseconds elapsed since January 1, 1970 00:00:00 UTC) the message was published."
-            },
-            "title": {
-              "$ref": "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json#/$defs/localizableText",
-              "description": "Id of localized string or message override of What's New message title"
-            },
-            "subtitle": {
-              "$ref": "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json#/$defs/localizableText",
-              "description": "Id of localized string or message override of What's New message subtitle"
-            },
-            "body": {
-              "$ref": "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json#/$defs/localizableText",
-              "description": "Id of localized string or message override of What's New message body"
-            },
-            "link_text": {
-              "$ref": "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json#/$defs/localizableText",
-              "description": "(optional) Id of localized string or message override of What's New message link text"
-            },
-            "cta_url": {
-              "description": "Target URL for the What's New message.",
-              "type": "string",
-              "format": "moz-url-format"
-            },
-            "cta_type": {
-              "description": "Type of url open action",
-              "enum": ["OPEN_URL", "OPEN_ABOUT_PAGE", "OPEN_PROTECTION_REPORT"]
-            },
-            "cta_where": {
-              "description": "How to open the cta: new window, tab, focused, unfocused.",
-              "enum": ["current", "tabshifted", "tab", "save", "window"]
-            },
-            "icon_url": {
-              "description": "(optional) URL for the What's New message icon.",
-              "type": "string",
-              "format": "uri"
-            },
-            "icon_alt": {
-              "$ref": "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json#/$defs/localizableText",
-              "description": "Alt text for image."
+              "required": [
+                "id",
+                "data"
+              ]
             }
           },
           "additionalProperties": true,
           "required": [
-            "published_date",
-            "title",
-            "body",
-            "cta_url",
-            "bucket_id"
+            "action"
           ]
         },
         "template": {
           "type": "string",
-          "const": "whatsnew_panel_message"
+          "const": "update_action"
         }
       },
-      "required": ["order"],
-      "additionalProperties": true
+      "required": [
+        "targeting"
+      ]
     },
     "Message": {
       "type": "object",
@@ -1097,8 +1140,7 @@
             "feature_callout",
             "toast_notification",
             "toolbar_badge",
-            "update_action",
-            "whatsnew_panel_message"
+            "update_action"
           ]
         },
         "frequency": {
@@ -1129,7 +1171,10 @@
                     "maximum": 100
                   }
                 },
-                "required": ["period", "cap"]
+                "required": [
+                  "period",
+                  "cap"
+                ]
               }
             }
           }
@@ -1169,7 +1214,9 @@
               }
             }
           },
-          "required": ["id"]
+          "required": [
+            "id"
+          ]
         },
         "provider": {
           "description": "An identifier for the provider of this message, such as \"cfr\" or \"preview\".",
@@ -1178,8 +1225,14 @@
       },
       "additionalProperties": true,
       "dependentRequired": {
-        "content": ["id", "template"],
-        "template": ["id", "content"]
+        "content": [
+          "id",
+          "template"
+        ],
+        "template": [
+          "id",
+          "content"
+        ]
       }
     },
     "localizedText": {
@@ -1190,7 +1243,9 @@
           "type": "string"
         }
       },
-      "required": ["string_id"]
+      "required": [
+        "string_id"
+      ]
     },
     "localizableText": {
       "description": "Either a raw string or an object containing the string_id of the localized text",
@@ -1217,10 +1272,14 @@
             "properties": {
               "template": {
                 "type": "string",
-                "enum": ["cfr_urlbar_chiclet"]
+                "enum": [
+                  "cfr_urlbar_chiclet"
+                ]
               }
             },
-            "required": ["template"]
+            "required": [
+              "template"
+            ]
           },
           "then": {
             "$ref": "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json#/$defs/CFRUrlbarChiclet"
@@ -1232,10 +1291,15 @@
             "properties": {
               "template": {
                 "type": "string",
-                "enum": ["cfr_doorhanger", "milestone_message"]
+                "enum": [
+                  "cfr_doorhanger",
+                  "milestone_message"
+                ]
               }
             },
-            "required": ["template"]
+            "required": [
+              "template"
+            ]
           },
           "then": {
             "$ref": "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json#/$defs/ExtensionDoorhanger"
@@ -1247,10 +1311,14 @@
             "properties": {
               "template": {
                 "type": "string",
-                "enum": ["infobar"]
+                "enum": [
+                  "infobar"
+                ]
               }
             },
-            "required": ["template"]
+            "required": [
+              "template"
+            ]
           },
           "then": {
             "$ref": "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json#/$defs/InfoBar"
@@ -1262,10 +1330,14 @@
             "properties": {
               "template": {
                 "type": "string",
-                "enum": ["pb_newtab"]
+                "enum": [
+                  "pb_newtab"
+                ]
               }
             },
-            "required": ["template"]
+            "required": [
+              "template"
+            ]
           },
           "then": {
             "$ref": "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json#/$defs/NewtabPromoMessage"
@@ -1277,10 +1349,15 @@
             "properties": {
               "template": {
                 "type": "string",
-                "enum": ["spotlight", "feature_callout"]
+                "enum": [
+                  "spotlight",
+                  "feature_callout"
+                ]
               }
             },
-            "required": ["template"]
+            "required": [
+              "template"
+            ]
           },
           "then": {
             "$ref": "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json#/$defs/Spotlight"
@@ -1292,10 +1369,14 @@
             "properties": {
               "template": {
                 "type": "string",
-                "enum": ["toast_notification"]
+                "enum": [
+                  "toast_notification"
+                ]
               }
             },
-            "required": ["template"]
+            "required": [
+              "template"
+            ]
           },
           "then": {
             "$ref": "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json#/$defs/ToastNotification"
@@ -1307,10 +1388,14 @@
             "properties": {
               "template": {
                 "type": "string",
-                "enum": ["toolbar_badge"]
+                "enum": [
+                  "toolbar_badge"
+                ]
               }
             },
-            "required": ["template"]
+            "required": [
+              "template"
+            ]
           },
           "then": {
             "$ref": "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json#/$defs/ToolbarBadgeMessage"
@@ -1322,29 +1407,18 @@
             "properties": {
               "template": {
                 "type": "string",
-                "enum": ["update_action"]
+                "enum": [
+                  "update_action"
+                ]
               }
             },
-            "required": ["template"]
+            "required": [
+              "template"
+            ]
           },
           "then": {
             "$ref": "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json#/$defs/UpdateAction"
           }
-        },
-        {
-          "if": {
-            "type": "object",
-            "properties": {
-              "template": {
-                "type": "string",
-                "enum": ["whatsnew_panel_message"]
-              }
-            },
-            "required": ["template"]
-          },
-          "then": {
-            "$ref": "chrome://browser/content/asrouter/schemas/MessagingExperiment.schema.json#/$defs/WhatsNewMessage"
-          }
         }
       ]
     },
@@ -1364,7 +1438,10 @@
           }
         }
       },
-      "required": ["template", "messages"]
+      "required": [
+        "template",
+        "messages"
+      ]
     }
   }
 }
diff --git a/browser/components/asrouter/content-src/schemas/make-schemas.py b/browser/components/asrouter/content-src/schemas/make-schemas.py
index f66490f23a..1f677cab28 100755
--- a/browser/components/asrouter/content-src/schemas/make-schemas.py
+++ b/browser/components/asrouter/content-src/schemas/make-schemas.py
@@ -83,9 +83,6 @@ SCHEMAS = [
             "UpdateAction": (
                 SCHEMA_DIR / "OnboardingMessage" / "UpdateAction.schema.json"
             ),
-            "WhatsNewMessage": (
-                SCHEMA_DIR / "OnboardingMessage" / "WhatsNewMessage.schema.json"
-            ),
         },
         bundle_common=True,
         test_corpus={
diff --git a/browser/components/asrouter/content-src/templates/OnboardingMessage/WhatsNewMessage.schema.json b/browser/components/asrouter/content-src/templates/OnboardingMessage/WhatsNewMessage.schema.json
deleted file mode 100644
index 26e795d068..0000000000
--- a/browser/components/asrouter/content-src/templates/OnboardingMessage/WhatsNewMessage.schema.json
+++ /dev/null
@@ -1,73 +0,0 @@
-{
-  "$schema": "https://json-schema.org/draft/2019-09/schema",
-  "$id": "file:///WhatsNewMessage.schema.json",
-  "title": "WhatsNewMessage",
-  "description": "A template for the messages that appear in the What's New panel.",
-  "allOf": [{ "$ref": "file:///FxMSCommon.schema.json#/$defs/Message" }],
-  "type": "object",
-  "properties": {
-    "content": {
-      "type": "object",
-      "properties": {
-        "layout": {
-          "description": "Different message layouts",
-          "enum": ["tracking-protections"]
-        },
-        "bucket_id": {
-          "type": "string",
-          "description": "A bucket identifier for the addon. This is used in order to anonymize telemetry for history-sensitive targeting."
-        },
-        "published_date": {
-          "type": "integer",
-          "description": "The date/time (number of milliseconds elapsed since January 1, 1970 00:00:00 UTC) the message was published."
-        },
-        "title": {
-          "$ref": "file:///FxMSCommon.schema.json#/$defs/localizableText",
-          "description": "Id of localized string or message override of What's New message title"
-        },
-        "subtitle": {
-          "$ref": "file:///FxMSCommon.schema.json#/$defs/localizableText",
-          "description": "Id of localized string or message override of What's New message subtitle"
-        },
-        "body": {
-          "$ref": "file:///FxMSCommon.schema.json#/$defs/localizableText",
-          "description": "Id of localized string or message override of What's New message body"
-        },
-        "link_text": {
-          "$ref": "file:///FxMSCommon.schema.json#/$defs/localizableText",
-          "description": "(optional) Id of localized string or message override of What's New message link text"
-        },
-        "cta_url": {
-          "description": "Target URL for the What's New message.",
-          "type": "string",
-          "format": "moz-url-format"
-        },
-        "cta_type": {
-          "description": "Type of url open action",
-          "enum": ["OPEN_URL", "OPEN_ABOUT_PAGE", "OPEN_PROTECTION_REPORT"]
-        },
-        "cta_where": {
-          "description": "How to open the cta: new window, tab, focused, unfocused.",
-          "enum": ["current", "tabshifted", "tab", "save", "window"]
-        },
-        "icon_url": {
-          "description": "(optional) URL for the What's New message icon.",
-          "type": "string",
-          "format": "uri"
-        },
-        "icon_alt": {
-          "$ref": "file:///FxMSCommon.schema.json#/$defs/localizableText",
-          "description": "Alt text for image."
-        }
-      },
-      "additionalProperties": true,
-      "required": ["published_date", "title", "body", "cta_url", "bucket_id"]
-    },
-    "template": {
-      "type": "string",
-      "const": "whatsnew_panel_message"
-    }
-  },
-  "required": ["order"],
-  "additionalProperties": true
-}