Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

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

1 files changed, 934 insertions, 0 deletions

diff --git a/mobile/android/chrome/geckoview/geckoview.js b/mobile/android/chrome/geckoview/geckoview.js
new file mode 100644
index 0000000000..69ca5e413f
--- /dev/null
+++ b/mobile/android/chrome/geckoview/geckoview.js
@@ -0,0 +1,934 @@
+/* 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/. */
+
+"use strict";
+
+var { DelayedInit } = ChromeUtils.import(
+  "resource://gre/modules/DelayedInit.jsm"
+);
+var { XPCOMUtils } = ChromeUtils.importESModule(
+  "resource://gre/modules/XPCOMUtils.sys.mjs"
+);
+
+ChromeUtils.defineESModuleGetters(this, {
+  Blocklist: "resource://gre/modules/Blocklist.sys.mjs",
+  E10SUtils: "resource://gre/modules/E10SUtils.sys.mjs",
+  EventDispatcher: "resource://gre/modules/Messaging.sys.mjs",
+  GeckoViewActorManager: "resource://gre/modules/GeckoViewActorManager.sys.mjs",
+  GeckoViewSettings: "resource://gre/modules/GeckoViewSettings.sys.mjs",
+  GeckoViewUtils: "resource://gre/modules/GeckoViewUtils.sys.mjs",
+  RemoteSecuritySettings:
+    "resource://gre/modules/psm/RemoteSecuritySettings.sys.mjs",
+  SafeBrowsing: "resource://gre/modules/SafeBrowsing.sys.mjs",
+});
+
+XPCOMUtils.defineLazyModuleGetters(this, {
+  HistogramStopwatch: "resource://gre/modules/GeckoViewTelemetry.jsm",
+  InitializationTracker: "resource://gre/modules/GeckoViewTelemetry.jsm",
+});
+
+XPCOMUtils.defineLazyGetter(this, "WindowEventDispatcher", () =>
+  EventDispatcher.for(window)
+);
+
+XPCOMUtils.defineLazyScriptGetter(
+  this,
+  "PrintUtils",
+  "chrome://global/content/printUtils.js"
+);
+
+// This file assumes `warn` and `debug` are imported into scope
+// by the child scripts.
+/* global debug, warn */
+
+/**
+ * ModuleManager creates and manages GeckoView modules. Each GeckoView module
+ * normally consists of a JSM module file with an optional content module file.
+ * The module file contains a class that extends GeckoViewModule, and the
+ * content module file contains a class that extends GeckoViewChildModule. A
+ * module usually pairs with a particular GeckoSessionHandler or delegate on the
+ * Java side, and automatically receives module lifetime events such as
+ * initialization, change in enabled state, and change in settings.
+ */
+var ModuleManager = {
+  get _initData() {
+    return window.arguments[0].QueryInterface(Ci.nsIAndroidView).initData;
+  },
+
+  init(aBrowser, aModules) {
+    const MODULES_INIT_PROBE = new HistogramStopwatch(
+      "GV_STARTUP_MODULES_MS",
+      aBrowser
+    );
+
+    MODULES_INIT_PROBE.start();
+
+    const initData = this._initData;
+    this._browser = aBrowser;
+    this._settings = initData.settings;
+    this._frozenSettings = Object.freeze(Object.assign({}, this._settings));
+
+    const self = this;
+    this._modules = new Map(
+      (function* () {
+        for (const module of aModules) {
+          yield [
+            module.name,
+            new ModuleInfo({
+              enabled: !!initData.modules[module.name],
+              manager: self,
+              ...module,
+            }),
+          ];
+        }
+      })()
+    );
+
+    window.document.documentElement.appendChild(aBrowser);
+
+    // By default all layers are discarded when a browser is set to inactive.
+    // GeckoView by default sets browsers to inactive every time they're not
+    // visible. To avoid flickering when changing tabs, we preserve layers for
+    // all loaded tabs.
+    aBrowser.preserveLayers(true);
+
+    WindowEventDispatcher.registerListener(this, [
+      "GeckoView:UpdateModuleState",
+      "GeckoView:UpdateInitData",
+      "GeckoView:UpdateSettings",
+    ]);
+
+    this.messageManager.addMessageListener(
+      "GeckoView:ContentModuleLoaded",
+      this
+    );
+
+    this._moduleByActorName = new Map();
+    this.forEach(module => {
+      module.onInit();
+      module.loadInitFrameScript();
+      for (const actorName of module.actorNames) {
+        this._moduleByActorName[actorName] = module;
+      }
+    });
+
+    window.addEventListener("unload", () => {
+      this.forEach(module => {
+        module.enabled = false;
+        module.onDestroy();
+      });
+
+      this._modules.clear();
+    });
+
+    MODULES_INIT_PROBE.finish();
+  },
+
+  onPrintWindow(aParams) {
+    if (!aParams.openWindowInfo.isForWindowDotPrint) {
+      return PrintUtils.handleStaticCloneCreatedForPrint(
+        aParams.openWindowInfo
+      );
+    }
+    const printActor = this.window.moduleManager.getActor(
+      "GeckoViewPrintDelegate"
+    );
+    // Prevents continually making new static browsers
+    if (printActor.browserStaticClone != null) {
+      throw new Error("A prior window.print is still in progress.");
+    }
+    const staticBrowser = PrintUtils.createParentBrowserForStaticClone(
+      aParams.openWindowInfo.parent,
+      aParams.openWindowInfo
+    );
+    printActor.browserStaticClone = staticBrowser;
+    printActor.printRequest();
+    return staticBrowser;
+  },
+
+  get window() {
+    return window;
+  },
+
+  get browser() {
+    return this._browser;
+  },
+
+  get messageManager() {
+    return this._browser.messageManager;
+  },
+
+  get eventDispatcher() {
+    return WindowEventDispatcher;
+  },
+
+  get settings() {
+    return this._frozenSettings;
+  },
+
+  forEach(aCallback) {
+    this._modules.forEach(aCallback, this);
+  },
+
+  getActor(aActorName) {
+    return this.browser.browsingContext.currentWindowGlobal?.getActor(
+      aActorName
+    );
+  },
+
+  // Ensures that session history has been flushed before changing remoteness
+  async prepareToChangeRemoteness() {
+    // Session state like history is maintained at the process level so we need
+    // to collect it and restore it in the other process when switching.
+    // TODO: This should go away when we migrate the history to the main
+    // process Bug 1507287.
+    const { history } = await this.getActor("GeckoViewContent").collectState();
+
+    // Ignore scroll and form data since we're navigating away from this page
+    // anyway
+    this.sessionState = { history };
+  },
+
+  willChangeBrowserRemoteness() {
+    debug`WillChangeBrowserRemoteness`;
+
+    // Now we're switching the remoteness.
+    this.disabledModules = [];
+    this.forEach(module => {
+      if (module.enabled && module.disableOnProcessSwitch) {
+        module.enabled = false;
+        this.disabledModules.push(module);
+      }
+    });
+
+    this.forEach(module => {
+      module.onDestroyBrowser();
+    });
+  },
+
+  didChangeBrowserRemoteness() {
+    debug`DidChangeBrowserRemoteness`;
+
+    this.forEach(module => {
+      if (module.impl) {
+        module.impl.onInitBrowser();
+      }
+    });
+
+    this.messageManager.addMessageListener(
+      "GeckoView:ContentModuleLoaded",
+      this
+    );
+
+    this.forEach(module => {
+      // We're attaching a new browser so we have to reload the frame scripts
+      module.loadInitFrameScript();
+    });
+
+    this.disabledModules.forEach(module => {
+      module.enabled = true;
+    });
+    this.disabledModules = null;
+  },
+
+  afterBrowserRemotenessChange(aSwitchId) {
+    const { sessionState } = this;
+    this.sessionState = null;
+
+    sessionState.switchId = aSwitchId;
+
+    this.getActor("GeckoViewContent").restoreState(sessionState);
+    this.browser.focus();
+
+    // Load was handled
+    return true;
+  },
+
+  _updateSettings(aSettings) {
+    Object.assign(this._settings, aSettings);
+    this._frozenSettings = Object.freeze(Object.assign({}, this._settings));
+
+    const windowType = aSettings.isPopup
+      ? "navigator:popup"
+      : "navigator:geckoview";
+    window.document.documentElement.setAttribute("windowtype", windowType);
+
+    this.forEach(module => {
+      if (module.impl) {
+        module.impl.onSettingsUpdate();
+      }
+    });
+  },
+
+  onMessageFromActor(aActorName, aMessage) {
+    this._moduleByActorName[aActorName].receiveMessage(aMessage);
+  },
+
+  onEvent(aEvent, aData, aCallback) {
+    debug`onEvent ${aEvent} ${aData}`;
+    switch (aEvent) {
+      case "GeckoView:UpdateModuleState": {
+        const module = this._modules.get(aData.module);
+        if (module) {
+          module.enabled = aData.enabled;
+        }
+        break;
+      }
+
+      case "GeckoView:UpdateInitData": {
+        // Replace all settings during a transfer.
+        const initData = this._initData;
+        this._updateSettings(initData.settings);
+
+        // Update module enabled states.
+        for (const name in initData.modules) {
+          const module = this._modules.get(name);
+          if (module) {
+            module.enabled = initData.modules[name];
+          }
+        }
+
+        // Notify child of the transfer.
+        this._browser.messageManager.sendAsyncMessage(aEvent);
+        break;
+      }
+
+      case "GeckoView:UpdateSettings": {
+        this._updateSettings(aData);
+        break;
+      }
+    }
+  },
+
+  receiveMessage(aMsg) {
+    debug`receiveMessage ${aMsg.name} ${aMsg.data}`;
+    switch (aMsg.name) {
+      case "GeckoView:ContentModuleLoaded": {
+        const module = this._modules.get(aMsg.data.module);
+        if (module) {
+          module.onContentModuleLoaded();
+        }
+        break;
+      }
+    }
+  },
+};
+
+/**
+ * ModuleInfo is the structure used by ModuleManager to represent individual
+ * modules. It is responsible for loading the module JSM file if necessary,
+ * and it acts as the intermediary between ModuleManager and the module
+ * object that extends GeckoViewModule.
+ */
+class ModuleInfo {
+  /**
+   * Create a ModuleInfo instance. See _loadPhase for phase object description.
+   *
+   * @param manager the ModuleManager instance.
+   * @param name Name of the module.
+   * @param enabled Enabled state of the module at startup.
+   * @param onInit Phase object for the init phase, when the window is created.
+   * @param onEnable Phase object for the enable phase, when the module is first
+   *                 enabled by setting a delegate in Java.
+   */
+  constructor({ manager, name, enabled, onInit, onEnable }) {
+    this._manager = manager;
+    this._name = name;
+
+    // We don't support having more than one main process script, so let's
+    // check that we're not accidentally defining two. We could support this if
+    // needed by making _impl an array for each phase impl.
+    if (onInit?.resource !== undefined && onEnable?.resource !== undefined) {
+      throw new Error(
+        "Only one main process script is allowed for each module."
+      );
+    }
+
+    this._impl = null;
+    this._contentModuleLoaded = false;
+    this._enabled = false;
+    // Only enable once we performed initialization.
+    this._enabledOnInit = enabled;
+
+    // For init, load resource _before_ initializing browser to support the
+    // onInitBrowser() override. However, load content module after initializing
+    // browser, because we don't have a message manager before then.
+    this._loadResource(onInit);
+    this._loadActors(onInit);
+    if (this._enabledOnInit) {
+      this._loadActors(onEnable);
+    }
+
+    this._onInitPhase = onInit;
+    this._onEnablePhase = onEnable;
+
+    const actorNames = [];
+    if (this._onInitPhase?.actors) {
+      actorNames.push(Object.keys(this._onInitPhase.actors));
+    }
+    if (this._onEnablePhase?.actors) {
+      actorNames.push(Object.keys(this._onEnablePhase.actors));
+    }
+    this._actorNames = Object.freeze(actorNames);
+  }
+
+  get actorNames() {
+    return this._actorNames;
+  }
+
+  onInit() {
+    if (this._impl) {
+      this._impl.onInit();
+      this._impl.onSettingsUpdate();
+    }
+
+    this.enabled = this._enabledOnInit;
+  }
+
+  /**
+   * Loads the onInit frame script
+   */
+  loadInitFrameScript() {
+    this._loadFrameScript(this._onInitPhase);
+  }
+
+  onDestroy() {
+    if (this._impl) {
+      this._impl.onDestroy();
+    }
+  }
+
+  /**
+   * Called before the browser is removed
+   */
+  onDestroyBrowser() {
+    if (this._impl) {
+      this._impl.onDestroyBrowser();
+    }
+    this._contentModuleLoaded = false;
+  }
+
+  _loadActors(aPhase) {
+    if (!aPhase || !aPhase.actors) {
+      return;
+    }
+
+    GeckoViewActorManager.addJSWindowActors(aPhase.actors);
+  }
+
+  /**
+   * Load resource according to a phase object that contains possible keys,
+   *
+   * "resource": specify the JSM resource to load for this module.
+   * "frameScript": specify a content JS frame script to load for this module.
+   */
+  _loadResource(aPhase) {
+    if (!aPhase || !aPhase.resource || this._impl) {
+      return;
+    }
+
+    const exports = ChromeUtils.importESModule(aPhase.resource);
+    this._impl = new exports[this._name](this);
+  }
+
+  /**
+   * Load frameScript according to a phase object that contains possible keys,
+   *
+   * "frameScript": specify a content JS frame script to load for this module.
+   */
+  _loadFrameScript(aPhase) {
+    if (!aPhase || !aPhase.frameScript || this._contentModuleLoaded) {
+      return;
+    }
+
+    if (this._impl) {
+      this._impl.onLoadContentModule();
+    }
+    this._manager.messageManager.loadFrameScript(aPhase.frameScript, true);
+    this._contentModuleLoaded = true;
+  }
+
+  get manager() {
+    return this._manager;
+  }
+
+  get disableOnProcessSwitch() {
+    // Only disable while process switching if it has a frameScript
+    return (
+      !!this._onInitPhase?.frameScript || !!this._onEnablePhase?.frameScript
+    );
+  }
+
+  get name() {
+    return this._name;
+  }
+
+  get impl() {
+    return this._impl;
+  }
+
+  get enabled() {
+    return this._enabled;
+  }
+
+  set enabled(aEnabled) {
+    if (aEnabled === this._enabled) {
+      return;
+    }
+
+    if (!aEnabled && this._impl) {
+      this._impl.onDisable();
+    }
+
+    this._enabled = aEnabled;
+
+    if (aEnabled) {
+      this._loadResource(this._onEnablePhase);
+      this._loadFrameScript(this._onEnablePhase);
+      this._loadActors(this._onEnablePhase);
+      if (this._impl) {
+        this._impl.onEnable();
+        this._impl.onSettingsUpdate();
+      }
+    }
+
+    this._updateContentModuleState();
+  }
+
+  receiveMessage(aMessage) {
+    if (!this._impl) {
+      throw new Error(`No impl for message: ${aMessage.name}.`);
+    }
+
+    try {
+      this._impl.receiveMessage(aMessage);
+    } catch (error) {
+      warn`this._impl.receiveMessage failed ${aMessage.name}`;
+      throw error;
+    }
+  }
+
+  onContentModuleLoaded() {
+    this._updateContentModuleState();
+
+    if (this._impl) {
+      this._impl.onContentModuleLoaded();
+    }
+  }
+
+  _updateContentModuleState() {
+    this._manager.messageManager.sendAsyncMessage(
+      "GeckoView:UpdateModuleState",
+      {
+        module: this._name,
+        enabled: this.enabled,
+      }
+    );
+  }
+}
+
+function createBrowser() {
+  const browser = (window.browser = document.createXULElement("browser"));
+  // Identify this `<browser>` element uniquely to Marionette, devtools, etc.
+  // Use the JSM global to create the permanentKey, so that if the
+  // permanentKey is held by something after this window closes, it
+  // doesn't keep the window alive. See also Bug 1501789.
+  browser.permanentKey = new (Cu.getGlobalForObject(Services).Object)();
+
+  browser.setAttribute("nodefaultsrc", "true");
+  browser.setAttribute("type", "content");
+  browser.setAttribute("primary", "true");
+  browser.setAttribute("flex", "1");
+  browser.setAttribute("maychangeremoteness", "true");
+  browser.setAttribute("remote", "true");
+  browser.setAttribute("remoteType", E10SUtils.DEFAULT_REMOTE_TYPE);
+  browser.setAttribute("messagemanagergroup", "browsers");
+
+  // This is only needed for mochitests, so that they honor the
+  // prefers-color-scheme.content-override pref. GeckoView doesn't set this
+  // pref to anything other than the default value otherwise.
+  browser.setAttribute(
+    "style",
+    "color-scheme: env(-moz-content-preferred-color-scheme)"
+  );
+
+  return browser;
+}
+
+function InitLater(fn, object, name) {
+  return DelayedInit.schedule(fn, object, name, 15000 /* 15s max wait */);
+}
+
+function startup() {
+  GeckoViewUtils.initLogging("XUL", window);
+
+  const browser = createBrowser();
+  ModuleManager.init(browser, [
+    {
+      name: "GeckoViewContent",
+      onInit: {
+        resource: "resource://gre/modules/GeckoViewContent.sys.mjs",
+        actors: {
+          GeckoViewContent: {
+            parent: {
+              esModuleURI: "resource:///actors/GeckoViewContentParent.sys.mjs",
+            },
+            child: {
+              esModuleURI: "resource:///actors/GeckoViewContentChild.sys.mjs",
+              events: {
+                mozcaretstatechanged: { capture: true, mozSystemGroup: true },
+                pageshow: { mozSystemGroup: true },
+              },
+            },
+            allFrames: true,
+            messageManagerGroups: ["browsers"],
+          },
+        },
+      },
+      onEnable: {
+        actors: {
+          ContentDelegate: {
+            parent: {
+              esModuleURI: "resource:///actors/ContentDelegateParent.sys.mjs",
+            },
+            child: {
+              esModuleURI: "resource:///actors/ContentDelegateChild.sys.mjs",
+              events: {
+                DOMContentLoaded: {},
+                DOMMetaViewportFitChanged: {},
+                "MozDOMFullscreen:Entered": {},
+                "MozDOMFullscreen:Exit": {},
+                "MozDOMFullscreen:Exited": {},
+                "MozDOMFullscreen:Request": {},
+                MozFirstContentfulPaint: {},
+                MozPaintStatusReset: {},
+                contextmenu: { capture: true },
+              },
+            },
+            allFrames: true,
+            messageManagerGroups: ["browsers"],
+          },
+        },
+      },
+    },
+    {
+      name: "GeckoViewNavigation",
+      onInit: {
+        resource: "resource://gre/modules/GeckoViewNavigation.sys.mjs",
+      },
+    },
+    {
+      name: "GeckoViewProcessHangMonitor",
+      onInit: {
+        resource: "resource://gre/modules/GeckoViewProcessHangMonitor.sys.mjs",
+      },
+    },
+    {
+      name: "GeckoViewProgress",
+      onEnable: {
+        resource: "resource://gre/modules/GeckoViewProgress.sys.mjs",
+        actors: {
+          ProgressDelegate: {
+            parent: {
+              esModuleURI: "resource:///actors/ProgressDelegateParent.sys.mjs",
+            },
+            child: {
+              esModuleURI: "resource:///actors/ProgressDelegateChild.sys.mjs",
+              events: {
+                MozAfterPaint: { capture: false, mozSystemGroup: true },
+                DOMContentLoaded: { capture: false, mozSystemGroup: true },
+                pageshow: { capture: false, mozSystemGroup: true },
+              },
+            },
+            messageManagerGroups: ["browsers"],
+          },
+        },
+      },
+    },
+    {
+      name: "GeckoViewScroll",
+      onEnable: {
+        actors: {
+          ScrollDelegate: {
+            parent: {
+              esModuleURI: "resource:///actors/ScrollDelegateParent.sys.mjs",
+            },
+            child: {
+              esModuleURI: "resource:///actors/ScrollDelegateChild.sys.mjs",
+              events: {
+                mozvisualscroll: { mozSystemGroup: true },
+              },
+            },
+            messageManagerGroups: ["browsers"],
+          },
+        },
+      },
+    },
+    {
+      name: "GeckoViewSelectionAction",
+      onEnable: {
+        resource: "resource://gre/modules/GeckoViewSelectionAction.sys.mjs",
+        actors: {
+          SelectionActionDelegate: {
+            parent: {
+              esModuleURI:
+                "resource:///actors/SelectionActionDelegateParent.sys.mjs",
+            },
+            child: {
+              esModuleURI:
+                "resource:///actors/SelectionActionDelegateChild.sys.mjs",
+              events: {
+                mozcaretstatechanged: { mozSystemGroup: true },
+                pagehide: { capture: true, mozSystemGroup: true },
+                deactivate: { mozSystemGroup: true },
+              },
+            },
+            allFrames: true,
+            messageManagerGroups: ["browsers"],
+          },
+        },
+      },
+    },
+    {
+      name: "GeckoViewSettings",
+      onInit: {
+        resource: "resource://gre/modules/GeckoViewSettings.sys.mjs",
+        actors: {
+          GeckoViewSettings: {
+            child: {
+              esModuleURI: "resource:///actors/GeckoViewSettingsChild.sys.mjs",
+            },
+          },
+        },
+      },
+    },
+    {
+      name: "GeckoViewTab",
+      onInit: {
+        resource: "resource://gre/modules/GeckoViewTab.sys.mjs",
+      },
+    },
+    {
+      name: "GeckoViewContentBlocking",
+      onInit: {
+        resource: "resource://gre/modules/GeckoViewContentBlocking.sys.mjs",
+      },
+    },
+    {
+      name: "SessionStateAggregator",
+      onInit: {
+        frameScript: "chrome://geckoview/content/SessionStateAggregator.js",
+      },
+    },
+    {
+      name: "GeckoViewAutofill",
+      onInit: {
+        actors: {
+          GeckoViewAutoFill: {
+            parent: {
+              esModuleURI: "resource:///actors/GeckoViewAutoFillParent.sys.mjs",
+            },
+            child: {
+              esModuleURI: "resource:///actors/GeckoViewAutoFillChild.sys.mjs",
+              events: {
+                DOMFormHasPassword: {
+                  mozSystemGroup: true,
+                  capture: false,
+                },
+                DOMInputPasswordAdded: {
+                  mozSystemGroup: true,
+                  capture: false,
+                },
+                pagehide: {
+                  mozSystemGroup: true,
+                  capture: false,
+                },
+                pageshow: {
+                  mozSystemGroup: true,
+                  capture: false,
+                },
+                focusin: {
+                  mozSystemGroup: true,
+                  capture: false,
+                },
+                focusout: {
+                  mozSystemGroup: true,
+                  capture: false,
+                },
+                "PasswordManager:ShowDoorhanger": {},
+              },
+            },
+            allFrames: true,
+            messageManagerGroups: ["browsers"],
+          },
+        },
+      },
+    },
+    {
+      name: "GeckoViewMediaControl",
+      onEnable: {
+        resource: "resource://gre/modules/GeckoViewMediaControl.sys.mjs",
+        actors: {
+          MediaControlDelegate: {
+            parent: {
+              esModuleURI:
+                "resource:///actors/MediaControlDelegateParent.sys.mjs",
+            },
+            child: {
+              esModuleURI:
+                "resource:///actors/MediaControlDelegateChild.sys.mjs",
+              events: {
+                "MozDOMFullscreen:Entered": {},
+                "MozDOMFullscreen:Exited": {},
+              },
+            },
+            allFrames: true,
+            messageManagerGroups: ["browsers"],
+          },
+        },
+      },
+    },
+    {
+      name: "GeckoViewAutocomplete",
+      onInit: {
+        actors: {
+          FormAutofill: {
+            parent: {
+              esModuleURI: "resource://autofill/FormAutofillParent.sys.mjs",
+            },
+            child: {
+              esModuleURI: "resource://autofill/FormAutofillChild.sys.mjs",
+              events: {
+                focusin: {},
+                DOMFormBeforeSubmit: {},
+              },
+            },
+            allFrames: true,
+            messageManagerGroups: ["browsers"],
+          },
+        },
+      },
+    },
+    {
+      name: "GeckoViewPrompter",
+      onInit: {
+        actors: {
+          GeckoViewPrompter: {
+            parent: {
+              esModuleURI: "resource:///actors/GeckoViewPrompterParent.sys.mjs",
+            },
+            child: {
+              esModuleURI: "resource:///actors/GeckoViewPrompterChild.sys.mjs",
+            },
+            allFrames: true,
+            includeChrome: true,
+          },
+        },
+      },
+    },
+    {
+      name: "GeckoViewPrintDelegate",
+      onInit: {
+        actors: {
+          GeckoViewPrintDelegate: {
+            parent: {
+              esModuleURI:
+                "resource:///actors/GeckoViewPrintDelegateParent.sys.mjs",
+            },
+            child: {
+              esModuleURI:
+                "resource:///actors/GeckoViewPrintDelegateChild.sys.mjs",
+            },
+            allFrames: true,
+          },
+        },
+      },
+    },
+  ]);
+
+  if (!Services.appinfo.sessionHistoryInParent) {
+    browser.prepareToChangeRemoteness = () =>
+      ModuleManager.prepareToChangeRemoteness();
+    browser.afterChangeRemoteness = switchId =>
+      ModuleManager.afterBrowserRemotenessChange(switchId);
+  }
+
+  browser.addEventListener("WillChangeBrowserRemoteness", event =>
+    ModuleManager.willChangeBrowserRemoteness()
+  );
+
+  browser.addEventListener("DidChangeBrowserRemoteness", event =>
+    ModuleManager.didChangeBrowserRemoteness()
+  );
+
+  // Allows actors to access ModuleManager.
+  window.moduleManager = ModuleManager;
+
+  window.prompts = () => {
+    return window.ModuleManager.getActor("GeckoViewPrompter").getPrompts();
+  };
+
+  Services.tm.dispatchToMainThread(() => {
+    // This should always be the first thing we do here - any additional delayed
+    // initialisation tasks should be added between "browser-delayed-startup-finished"
+    // and "browser-idle-startup-tasks-finished".
+
+    // Bug 1496684: Various bits of platform stuff depend on this notification
+    // to learn when a browser window has finished its initial (chrome)
+    // initialisation, especially with regards to the very first window that is
+    // created. Therefore, GeckoView "windows" need to send this, too.
+    InitLater(() =>
+      Services.obs.notifyObservers(window, "browser-delayed-startup-finished")
+    );
+
+    // Let the extension code know it can start loading things that were delayed
+    // while GeckoView started up.
+    InitLater(() => {
+      Services.obs.notifyObservers(window, "extensions-late-startup");
+    });
+
+    InitLater(() => {
+      // TODO bug 1730026: this runs too often. It should run once.
+      RemoteSecuritySettings.init();
+    });
+
+    InitLater(() => {
+      // Initialize safe browsing module. This is required for content
+      // blocking features and manages blocklist downloads and updates.
+      SafeBrowsing.init();
+    });
+
+    InitLater(() => {
+      // It's enough to run this once to set up FOG.
+      // (See also bug 1730026.)
+      Services.fog.registerCustomPings();
+    });
+
+    InitLater(() => {
+      // Initialize the blocklist module.
+      // TODO bug 1730026: this runs too often. It should run once.
+      Blocklist.loadBlocklistAsync();
+    });
+
+    // This should always go last, since the idle tasks (except for the ones with
+    // timeouts) should execute in order. Note that this observer notification is
+    // not guaranteed to fire, since the window could close before we get here.
+
+    // This notification in particular signals the ScriptPreloader that we have
+    // finished startup, so it can now stop recording script usage and start
+    // updating the startup cache for faster script loading.
+    InitLater(() =>
+      Services.obs.notifyObservers(
+        window,
+        "browser-idle-startup-tasks-finished"
+      )
+    );
+  });
+
+  // Move focus to the content window at the end of startup,
+  // so things like text selection can work properly.
+  browser.focus();
+
+  InitializationTracker.onInitialized(performance.now());
+}