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Diffstat (limited to 'browser/components/migration/content/migration.js')
| -rw-r--r-- | browser/components/migration/content/migration.js | 812 |
1 files changed, 812 insertions, 0 deletions
diff --git a/browser/components/migration/content/migration.js b/browser/components/migration/content/migration.js new file mode 100644 index 0000000000..bc27bb4c9d --- /dev/null +++ b/browser/components/migration/content/migration.js @@ -0,0 +1,812 @@ +/* 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"; + +const { AppConstants } = ChromeUtils.importESModule( + "resource://gre/modules/AppConstants.sys.mjs" +); +const { MigrationUtils } = ChromeUtils.importESModule( + "resource:///modules/MigrationUtils.sys.mjs" +); +const { MigratorBase } = ChromeUtils.importESModule( + "resource:///modules/MigratorBase.sys.mjs" +); + +/** + * Map from data types that match Ci.nsIBrowserProfileMigrator's types to + * prefixes for strings used to label these data types in the migration + * dialog. We use these strings with -checkbox and -label suffixes for the + * checkboxes on the "importItems" page, and for the labels on the "migrating" + * and "done" pages, respectively. + */ +const kDataToStringMap = new Map([ + ["cookies", "browser-data-cookies"], + ["history", "browser-data-history"], + ["formdata", "browser-data-formdata"], + ["passwords", "browser-data-passwords"], + ["bookmarks", "browser-data-bookmarks"], + ["otherdata", "browser-data-otherdata"], + ["session", "browser-data-session"], + ["payment_methods", "browser-data-payment-methods"], +]); + +var MigrationWizard = { + /* exported MigrationWizard */ + _source: "", // Source Profile Migrator ContractID suffix + _itemsFlags: MigrationUtils.resourceTypes.ALL, // Selected Import Data Sources (16-bit bitfield) + _selectedProfile: null, // Selected Profile name to import from + _wiz: null, + _migrator: null, + _autoMigrate: null, + _receivedPermissions: new Set(), + _succeededMigrationEventArgs: null, + + init() { + Services.telemetry.setEventRecordingEnabled("browser.migration", true); + + let os = Services.obs; + os.addObserver(this, "Migration:Started"); + os.addObserver(this, "Migration:ItemBeforeMigrate"); + os.addObserver(this, "Migration:ItemAfterMigrate"); + os.addObserver(this, "Migration:ItemError"); + os.addObserver(this, "Migration:Ended"); + + this._wiz = document.querySelector("wizard"); + + let args = window.arguments[0]?.wrappedJSObject || {}; + let entrypoint = + args.entrypoint || MigrationUtils.MIGRATION_ENTRYPOINTS.UNKNOWN; + Services.telemetry + .getHistogramById("FX_MIGRATION_ENTRY_POINT_CATEGORICAL") + .add(entrypoint); + + // The legacy entrypoint Histogram wasn't categorical, so we translate to the right + // numeric value before writing it. We'll keep this Histogram around to ensure a + // smooth transition to the new FX_MIGRATION_ENTRY_POINT_CATEGORICAL categorical + // histogram. + let entryPointId = MigrationUtils.getLegacyMigrationEntrypoint(entrypoint); + Services.telemetry + .getHistogramById("FX_MIGRATION_ENTRY_POINT") + .add(entryPointId); + + this.isInitialMigration = + entrypoint == MigrationUtils.MIGRATION_ENTRYPOINTS.FIRSTRUN; + + // Record that the uninstaller requested a profile refresh + if (Services.env.get("MOZ_UNINSTALLER_PROFILE_REFRESH")) { + Services.env.set("MOZ_UNINSTALLER_PROFILE_REFRESH", ""); + Services.telemetry.scalarSet( + "migration.uninstaller_profile_refresh", + true + ); + } + + this._source = args.migratorKey; + this._migrator = + args.migrator instanceof MigratorBase ? args.migrator : null; + this._autoMigrate = !!args.isStartupMigration; + this._skipImportSourcePage = !!args.skipSourceSelection; + + if (this._migrator && args.profileId) { + let sourceProfiles = this.spinResolve(this._migrator.getSourceProfiles()); + this._selectedProfile = sourceProfiles.find( + profile => profile.id == args.profileId + ); + } + + if (this._autoMigrate) { + // Show the "nothing" option in the automigrate case to provide an + // easily identifiable way to avoid migration and create a new profile. + document.getElementById("nothing").hidden = false; + } + + this._setSourceForDataLocalization(); + + document.addEventListener("wizardcancel", function () { + MigrationWizard.onWizardCancel(); + }); + + document + .getElementById("selectProfile") + .addEventListener("pageshow", function () { + MigrationWizard.onSelectProfilePageShow(); + }); + document + .getElementById("importItems") + .addEventListener("pageshow", function () { + MigrationWizard.onImportItemsPageShow(); + }); + document + .getElementById("migrating") + .addEventListener("pageshow", function () { + MigrationWizard.onMigratingPageShow(); + }); + document.getElementById("done").addEventListener("pageshow", function () { + MigrationWizard.onDonePageShow(); + }); + + document + .getElementById("selectProfile") + .addEventListener("pagerewound", function () { + MigrationWizard.onSelectProfilePageRewound(); + }); + document + .getElementById("importItems") + .addEventListener("pagerewound", function () { + MigrationWizard.onImportItemsPageRewound(); + }); + + document + .getElementById("selectProfile") + .addEventListener("pageadvanced", function () { + MigrationWizard.onSelectProfilePageAdvanced(); + }); + document + .getElementById("importItems") + .addEventListener("pageadvanced", function () { + MigrationWizard.onImportItemsPageAdvanced(); + }); + document + .getElementById("importPermissions") + .addEventListener("pageadvanced", function (e) { + MigrationWizard.onImportPermissionsPageAdvanced(e); + }); + document + .getElementById("importSource") + .addEventListener("pageadvanced", function (e) { + MigrationWizard.onImportSourcePageAdvanced(e); + }); + + this.recordEvent("opened"); + + this.onImportSourcePageShow(); + }, + + uninit() { + var os = Services.obs; + os.removeObserver(this, "Migration:Started"); + os.removeObserver(this, "Migration:ItemBeforeMigrate"); + os.removeObserver(this, "Migration:ItemAfterMigrate"); + os.removeObserver(this, "Migration:ItemError"); + os.removeObserver(this, "Migration:Ended"); + os.notifyObservers(this, "MigrationWizard:Destroyed"); + MigrationUtils.finishMigration(); + }, + + /** + * Used for recording telemetry in the migration wizard. + * + * @param {string} type + * The type of event being recorded. + * @param {object} args + * The data to pass to telemetry when the event is recorded. + */ + recordEvent(type, args = null) { + Services.telemetry.recordEvent( + "browser.migration", + type, + "legacy_wizard", + null, + args + ); + }, + + spinResolve(promise) { + let canAdvance = this._wiz.canAdvance; + let canRewind = this._wiz.canRewind; + this._wiz.canAdvance = false; + this._wiz.canRewind = false; + let result = MigrationUtils.spinResolve(promise); + this._wiz.canAdvance = canAdvance; + this._wiz.canRewind = canRewind; + return result; + }, + + _setSourceForDataLocalization() { + this._sourceForDataLocalization = this._source; + // Ensure consistency for various channels, brandings and versions of + // Chromium and MS Edge. + if (this._sourceForDataLocalization) { + this._sourceForDataLocalization = this._sourceForDataLocalization + .replace(/^(chromium-edge-beta|chromium-edge)$/, "edge") + .replace(/^(canary|chromium|chrome-beta|chrome-dev)$/, "chrome"); + } + }, + + onWizardCancel() { + MigrationUtils.forceExitSpinResolve(); + return true; + }, + + // 1 - Import Source + onImportSourcePageShow() { + this._wiz.canRewind = false; + + var selectedMigrator = null; + this._availableMigrators = []; + + // Figure out what source apps are are available to import from: + var group = document.getElementById("importSourceGroup"); + for (var i = 0; i < group.childNodes.length; ++i) { + var migratorKey = group.childNodes[i].id; + if (migratorKey != "nothing") { + var migrator = this.spinResolve( + MigrationUtils.getMigrator(migratorKey) + ); + + if (migrator?.enabled) { + // Save this as the first selectable item, if we don't already have + // one, or if it is the migrator that was passed to us. + if (!selectedMigrator || this._source == migratorKey) { + selectedMigrator = group.childNodes[i]; + } + + let profiles = this.spinResolve(migrator.getSourceProfiles()); + if (profiles?.length) { + Services.telemetry.keyedScalarAdd( + "migration.discovered_migrators", + migratorKey, + profiles.length + ); + } else { + Services.telemetry.keyedScalarAdd( + "migration.discovered_migrators", + migratorKey, + 1 + ); + } + + this._availableMigrators.push([migratorKey, migrator]); + } else { + // Hide this option + group.childNodes[i].hidden = true; + } + } + } + if (this.isInitialMigration) { + Services.telemetry + .getHistogramById("FX_STARTUP_MIGRATION_BROWSER_COUNT") + .add(this._availableMigrators.length); + let defaultBrowser = MigrationUtils.getMigratorKeyForDefaultBrowser(); + // This will record 0 for unknown default browser IDs. + defaultBrowser = MigrationUtils.getSourceIdForTelemetry(defaultBrowser); + Services.telemetry + .getHistogramById("FX_STARTUP_MIGRATION_EXISTING_DEFAULT_BROWSER") + .add(defaultBrowser); + } + + if (selectedMigrator) { + group.selectedItem = selectedMigrator; + } else { + this.recordEvent("no_browsers_found"); + // We didn't find a migrator, notify the user + document.getElementById("noSources").hidden = false; + + this._wiz.canAdvance = false; + + document.getElementById("importAll").hidden = true; + } + + // Advance to the next page if the caller told us to. + if (this._migrator && this._skipImportSourcePage) { + this._wiz.advance(); + this._wiz.canRewind = false; + } + }, + + onImportSourcePageAdvanced(event) { + var newSource = + document.getElementById("importSourceGroup").selectedItem.id; + + this.recordEvent("browser_selected", { migrator_key: newSource }); + + if (newSource == "nothing") { + // Need to do telemetry here because we're closing the dialog before we get to + // do actual migration. For actual migration, this doesn't happen until after + // migration takes place. + Services.telemetry + .getHistogramById("FX_MIGRATION_SOURCE_BROWSER") + .add(MigrationUtils.getSourceIdForTelemetry("nothing")); + this._wiz.cancel(); + event.preventDefault(); + } + + if (!this._migrator || newSource != this._source) { + // Create the migrator for the selected source. + this._migrator = this.spinResolve(MigrationUtils.getMigrator(newSource)); + + this._itemsFlags = MigrationUtils.resourceTypes.ALL; + this._selectedProfile = null; + } + this._source = newSource; + this._setSourceForDataLocalization(); + + // check for more than one source profile + var sourceProfiles = this.spinResolve(this._migrator.getSourceProfiles()); + if (this._skipImportSourcePage) { + this._updateNextPageForPermissions(); + } else if (sourceProfiles && sourceProfiles.length > 1) { + this._wiz.currentPage.next = "selectProfile"; + } else { + if (this._autoMigrate) { + this._updateNextPageForPermissions(); + } else { + this._wiz.currentPage.next = "importItems"; + } + + if (sourceProfiles && sourceProfiles.length == 1) { + this._selectedProfile = sourceProfiles[0]; + } else { + this._selectedProfile = null; + } + } + }, + + // 2 - [Profile Selection] + onSelectProfilePageShow() { + // Disabling this for now, since we ask about import sources in automigration + // too and don't want to disable the back button + // if (this._autoMigrate) + // document.documentElement.getButton("back").disabled = true; + + var profiles = document.getElementById("profiles"); + while (profiles.hasChildNodes()) { + profiles.firstChild.remove(); + } + + // Note that this block is still reached even if the user chose 'From File' + // and we canceled the dialog. When that happens, _migrator will be null. + if (this._migrator) { + var sourceProfiles = this.spinResolve(this._migrator.getSourceProfiles()); + + for (let profile of sourceProfiles) { + var item = document.createXULElement("radio"); + item.id = profile.id; + item.setAttribute("label", profile.name); + profiles.appendChild(item); + } + } + + profiles.selectedItem = this._selectedProfile + ? document.getElementById(this._selectedProfile.id) + : profiles.firstChild; + }, + + onSelectProfilePageRewound() { + var profiles = document.getElementById("profiles"); + let sourceProfiles = this.spinResolve(this._migrator.getSourceProfiles()); + this._selectedProfile = + sourceProfiles.find(profile => profile.id == profiles.selectedItem.id) || + null; + }, + + onSelectProfilePageAdvanced() { + this.recordEvent("profile_selected", { + migrator_key: this._source, + }); + var profiles = document.getElementById("profiles"); + let sourceProfiles = this.spinResolve(this._migrator.getSourceProfiles()); + this._selectedProfile = + sourceProfiles.find(profile => profile.id == profiles.selectedItem.id) || + null; + + // If we're automigrating or just doing bookmarks don't show the item selection page + if (this._autoMigrate) { + this._updateNextPageForPermissions(); + } + }, + + // 3 - ImportItems + onImportItemsPageShow() { + var dataSources = document.getElementById("dataSources"); + while (dataSources.hasChildNodes()) { + dataSources.firstChild.remove(); + } + + var items = this.spinResolve( + this._migrator.getMigrateData(this._selectedProfile) + ); + + for (let itemType of kDataToStringMap.keys()) { + let itemValue = MigrationUtils.resourceTypes[itemType.toUpperCase()]; + if (items & itemValue) { + let checkbox = document.createXULElement("checkbox"); + checkbox.id = itemValue; + checkbox.setAttribute("native", true); + document.l10n.setAttributes( + checkbox, + kDataToStringMap.get(itemType) + "-checkbox", + { browser: this._sourceForDataLocalization } + ); + dataSources.appendChild(checkbox); + if (!this._itemsFlags || this._itemsFlags & itemValue) { + checkbox.checked = true; + } + } + } + }, + + onImportItemsPageRewound() { + this._wiz.canAdvance = true; + this.onImportItemsPageAdvanced(true /* viaRewind */); + }, + + onImportItemsPageAdvanced(viaRewind = false) { + let extraKeys = { + migrator_key: this._source, + history: "0", + formdata: "0", + passwords: "0", + bookmarks: "0", + payment_methods: "0", + + // "other" will get incremented, so we keep this as a number for + // now, and will cast to a string before submitting to Event telemetry. + other: 0, + + configured: "0", + }; + + var dataSources = document.getElementById("dataSources"); + this._itemsFlags = 0; + + for (var i = 0; i < dataSources.childNodes.length; ++i) { + var checkbox = dataSources.childNodes[i]; + if (checkbox.localName == "checkbox" && checkbox.checked) { + let flag = parseInt(checkbox.id); + + switch (flag) { + case MigrationUtils.resourceTypes.HISTORY: + extraKeys.history = "1"; + break; + case MigrationUtils.resourceTypes.FORMDATA: + extraKeys.formdata = "1"; + break; + case MigrationUtils.resourceTypes.PASSWORDS: + extraKeys.passwords = "1"; + break; + case MigrationUtils.resourceTypes.BOOKMARKS: + extraKeys.bookmarks = "1"; + break; + case MigrationUtils.resourceTypes.PAYMENT_METHODS: + extraKeys.payment_methods = "1"; + break; + default: + extraKeys.other++; + } + + this._itemsFlags |= parseInt(checkbox.id); + } + } + + extraKeys.other = String(extraKeys.other); + + if (!viaRewind) { + this.recordEvent("resources_selected", extraKeys); + } + + this._updateNextPageForPermissions(); + }, + + onImportItemCommand() { + var items = document.getElementById("dataSources"); + var checkboxes = items.getElementsByTagName("checkbox"); + + var oneChecked = false; + for (var i = 0; i < checkboxes.length; ++i) { + if (checkboxes[i].checked) { + oneChecked = true; + break; + } + } + + this._wiz.canAdvance = oneChecked; + + this._updateNextPageForPermissions(); + }, + + _updateNextPageForPermissions() { + // We would like to just go straight to work: + this._wiz.currentPage.next = "migrating"; + // If we already have permissions, this is easy: + if (this._receivedPermissions.has(this._source)) { + return; + } + + // Otherwise, if we're on mojave or later and importing from + // Safari, prompt for the bookmarks file. + // We may add other browser/OS combos here in future. + if ( + this._source == "safari" && + AppConstants.isPlatformAndVersionAtLeast("macosx", "18") && + (this._itemsFlags & MigrationUtils.resourceTypes.BOOKMARKS || + this._itemsFlags == MigrationUtils.resourceTypes.ALL) + ) { + let havePermissions = this.spinResolve(this._migrator.hasPermissions()); + + if (!havePermissions) { + this._wiz.currentPage.next = "importPermissions"; + this.recordEvent("safari_perms"); + } + } + }, + + // 3b: permissions. This gets invoked when the user clicks "Next" + async onImportPermissionsPageAdvanced(event) { + // We're done if we have permission: + if (this._receivedPermissions.has(this._source)) { + return; + } + // The wizard helper is sync, and we need to check some stuff, so just stop + // advancing for now and prompt the user, then advance the wizard if everything + // worked. + event.preventDefault(); + + await this._migrator.getPermissions(window); + if (await this._migrator.hasPermissions()) { + this._receivedPermissions.add(this._source); + // Re-enter (we'll then allow the advancement through the early return above) + this._wiz.advance(); + } + // if we didn't have permissions after the `getPermissions` call, the user + // cancelled the dialog. Just no-op out now; the user can re-try by clicking + // the 'Continue' button again, or go back and pick a different browser. + }, + + // 4 - Migrating + onMigratingPageShow() { + this._wiz.getButton("cancel").disabled = true; + this._wiz.canRewind = false; + this._wiz.canAdvance = false; + + // When automigrating, show all of the data that can be received from this source. + if (this._autoMigrate) { + this._itemsFlags = this.spinResolve( + this._migrator.getMigrateData(this._selectedProfile) + ); + } + + this._listItems("migratingItems"); + setTimeout(() => this.onMigratingMigrate(), 0); + }, + + async onMigratingMigrate() { + await this._migrator.migrate( + this._itemsFlags, + this._autoMigrate, + this._selectedProfile + ); + + Services.telemetry + .getHistogramById("FX_MIGRATION_SOURCE_BROWSER") + .add(MigrationUtils.getSourceIdForTelemetry(this._source)); + if (!this._autoMigrate) { + let hist = Services.telemetry.getKeyedHistogramById("FX_MIGRATION_USAGE"); + let exp = 0; + let items = this._itemsFlags; + while (items) { + if (items & 1) { + hist.add(this._source, exp); + } + items = items >> 1; + exp++; + } + } + }, + + _listItems(aID) { + var items = document.getElementById(aID); + while (items.hasChildNodes()) { + items.firstChild.remove(); + } + + for (let itemType of kDataToStringMap.keys()) { + let itemValue = MigrationUtils.resourceTypes[itemType.toUpperCase()]; + if (this._itemsFlags & itemValue) { + var label = document.createXULElement("label"); + label.id = itemValue + "_migrated"; + try { + document.l10n.setAttributes( + label, + kDataToStringMap.get(itemType) + "-label", + { browser: this._sourceForDataLocalization } + ); + items.appendChild(label); + } catch (e) { + // if the block above throws, we've enumerated all the import data types we + // currently support and are now just wasting time, break. + break; + } + } + } + }, + + recordResourceMigration(obj, resourceType) { + // Sometimes, the resourceType that gets passed here is a string, which + // is bizarre. We'll hold our nose and accept either a string or a + // number. + resourceType = parseInt(resourceType, 10); + + switch (resourceType) { + case MigrationUtils.resourceTypes.HISTORY: + obj.history = "1"; + break; + case MigrationUtils.resourceTypes.FORMDATA: + obj.formdata = "1"; + break; + case MigrationUtils.resourceTypes.PASSWORDS: + obj.passwords = "1"; + break; + case MigrationUtils.resourceTypes.BOOKMARKS: + obj.bookmarks = "1"; + break; + case MigrationUtils.resourceTypes.PAYMENT_METHODS: + obj.payment_methods = "1"; + break; + default: + obj.other++; + } + }, + + recordMigrationStartEvent(resourceFlags) { + let extraKeys = { + migrator_key: this._source, + history: "0", + formdata: "0", + passwords: "0", + bookmarks: "0", + payment_methods: "0", + // "other" will get incremented, so we keep this as a number for + // now, and will cast to a string before submitting to Event telemetry. + other: 0, + }; + + for (let resourceTypeKey in MigrationUtils.resourceTypes) { + let resourceType = MigrationUtils.resourceTypes[resourceTypeKey]; + if (resourceFlags & resourceType) { + this.recordResourceMigration(extraKeys, resourceType); + } + } + + extraKeys.other = String(extraKeys.other); + this.recordEvent("migration_started", extraKeys); + }, + + observe(aSubject, aTopic, aData) { + var label; + switch (aTopic) { + case "Migration:Started": + this._succeededMigrationEventArgs = { + migrator_key: this._source, + history: "0", + formdata: "0", + passwords: "0", + bookmarks: "0", + payment_methods: "0", + // "other" will get incremented, so we keep this as a number for + // now, and will cast to a string before submitting to Event telemetry. + other: 0, + }; + this.recordMigrationStartEvent(this._itemsFlags); + break; + case "Migration:ItemBeforeMigrate": + label = document.getElementById(aData + "_migrated"); + if (label) { + label.setAttribute("style", "font-weight: bold"); + } + break; + case "Migration:ItemAfterMigrate": + this.recordResourceMigration(this._succeededMigrationEventArgs, aData); + label = document.getElementById(aData + "_migrated"); + if (label) { + label.removeAttribute("style"); + } + break; + case "Migration:Ended": + this._succeededMigrationEventArgs.other = String( + this._succeededMigrationEventArgs.other + ); + this.recordEvent( + "migration_finished", + this._succeededMigrationEventArgs + ); + + if (this.isInitialMigration) { + // Ensure errors in reporting data recency do not affect the rest of the migration. + try { + this.reportDataRecencyTelemetry(); + } catch (ex) { + console.error(ex); + } + } + if (this._autoMigrate) { + // We're done now. + this._wiz.canAdvance = true; + this._wiz.advance(); + + setTimeout(close, 5000); + } else { + this._wiz.canAdvance = true; + var nextButton = this._wiz.getButton("next"); + nextButton.click(); + } + break; + case "Migration:ItemError": + let type = "undefined"; + let numericType = parseInt(aData); + switch (numericType) { + case MigrationUtils.resourceTypes.COOKIES: + type = "cookies"; + break; + case MigrationUtils.resourceTypes.HISTORY: + type = "history"; + break; + case MigrationUtils.resourceTypes.FORMDATA: + type = "form data"; + break; + case MigrationUtils.resourceTypes.PASSWORDS: + type = "passwords"; + break; + case MigrationUtils.resourceTypes.BOOKMARKS: + type = "bookmarks"; + break; + case MigrationUtils.resourceTypes.PAYMENT_METHODS: + type = "payment methods"; + break; + case MigrationUtils.resourceTypes.OTHERDATA: + type = "misc. data"; + break; + } + Services.console.logStringMessage( + "some " + type + " did not successfully migrate." + ); + Services.telemetry + .getKeyedHistogramById("FX_MIGRATION_ERRORS") + .add(this._source, Math.log2(numericType)); + break; + } + }, + + onDonePageShow() { + this._wiz.getButton("cancel").disabled = true; + this._wiz.canRewind = false; + this._listItems("doneItems"); + }, + + reportDataRecencyTelemetry() { + let histogram = Services.telemetry.getKeyedHistogramById( + "FX_STARTUP_MIGRATION_DATA_RECENCY" + ); + let lastUsedPromises = []; + for (let [key, migrator] of this._availableMigrators) { + // No block-scoped let in for...of loop conditions, so get the source: + let localKey = key; + lastUsedPromises.push( + migrator.getLastUsedDate().then(date => { + const ONE_YEAR = 24 * 365; + let diffInHours = Math.round((Date.now() - date) / (60 * 60 * 1000)); + if (diffInHours > ONE_YEAR) { + diffInHours = ONE_YEAR; + } + histogram.add(localKey, diffInHours); + return [localKey, diffInHours]; + }) + ); + } + Promise.all(lastUsedPromises).then(migratorUsedTimeDiff => { + // Sort low to high. + migratorUsedTimeDiff.sort( + ([keyA, diffA], [keyB, diffB]) => diffA - diffB + ); /* eslint no-unused-vars: off */ + let usedMostRecentBrowser = + migratorUsedTimeDiff.length && + this._source == migratorUsedTimeDiff[0][0]; + let usedRecentBrowser = Services.telemetry.getKeyedHistogramById( + "FX_STARTUP_MIGRATION_USED_RECENT_BROWSER" + ); + usedRecentBrowser.add(this._source, usedMostRecentBrowser); + }); + }, +}; |