Adding upstream version 124.0.1.upstream/124.0.1

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

1 files changed, 902 insertions, 0 deletions

diff --git a/browser/components/aboutwelcome/modules/AboutWelcomeDefaults.sys.mjs b/browser/components/aboutwelcome/modules/AboutWelcomeDefaults.sys.mjs
new file mode 100644
index 0000000000..828839c8d0
--- /dev/null
+++ b/browser/components/aboutwelcome/modules/AboutWelcomeDefaults.sys.mjs
@@ -0,0 +1,902 @@
+/* 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/. */
+
+// We use importESModule here instead of static import so that
+// the Karma test environment won't choke on this module. This
+// is because the Karma test environment already stubs out
+// AppConstants, and overrides importESModule to be a no-op (which
+// can't be done for a static import statement).
+
+// eslint-disable-next-line mozilla/use-static-import
+const { AppConstants } = ChromeUtils.importESModule(
+  "resource://gre/modules/AppConstants.sys.mjs"
+);
+
+const lazy = {};
+
+ChromeUtils.defineESModuleGetters(lazy, {
+  AddonRepository: "resource://gre/modules/addons/AddonRepository.sys.mjs",
+  AttributionCode: "resource:///modules/AttributionCode.sys.mjs",
+  AWScreenUtils: "resource:///modules/aboutwelcome/AWScreenUtils.sys.mjs",
+  BrowserUtils: "resource://gre/modules/BrowserUtils.sys.mjs",
+});
+
+// Message to be updated based on finalized MR designs
+const MR_ABOUT_WELCOME_DEFAULT = {
+  id: "MR_WELCOME_DEFAULT",
+  template: "multistage",
+  // Allow tests to easily disable transitions.
+  transitions: Services.prefs.getBoolPref(
+    "browser.aboutwelcome.transitions",
+    true
+  ),
+  backdrop:
+    "var(--mr-welcome-background-color) var(--mr-welcome-background-gradient)",
+  screens: [
+    {
+      id: "AW_WELCOME_BACK",
+      targeting: "isDeviceMigration",
+      content: {
+        position: "split",
+        split_narrow_bkg_position: "-100px",
+        image_alt_text: {
+          string_id: "onboarding-device-migration-image-alt",
+        },
+        background:
+          "url('chrome://activity-stream/content/data/content/assets/device-migration.svg') var(--mr-secondary-position) no-repeat var(--mr-screen-background-color)",
+        progress_bar: true,
+        logo: {},
+        title: {
+          string_id: "onboarding-device-migration-title",
+        },
+        subtitle: {
+          string_id: "onboarding-device-migration-subtitle2",
+        },
+        primary_button: {
+          label: {
+            string_id: "onboarding-device-migration-primary-button-label",
+          },
+          action: {
+            type: "FXA_SIGNIN_FLOW",
+            navigate: "actionResult",
+            data: {
+              entrypoint: "fx-device-migration-onboarding",
+              extraParams: {
+                utm_content: "migration-onboarding",
+                utm_source: "fx-new-device-sync",
+                utm_medium: "firefox-desktop",
+                utm_campaign: "migration",
+              },
+            },
+          },
+        },
+        secondary_button: {
+          label: {
+            string_id: "mr2022-onboarding-secondary-skip-button-label",
+          },
+          action: {
+            navigate: true,
+          },
+          has_arrow_icon: true,
+        },
+      },
+    },
+    {
+      id: "AW_EASY_SETUP_NEEDS_DEFAULT_AND_PIN",
+      targeting:
+        "doesAppNeedPin && 'browser.shell.checkDefaultBrowser'|preferenceValue && !isDefaultBrowser",
+      content: {
+        position: "split",
+        split_narrow_bkg_position: "-60px",
+        image_alt_text: {
+          string_id: "mr2022-onboarding-default-image-alt",
+        },
+        background:
+          "url('chrome://activity-stream/content/data/content/assets/mr-settodefault.svg') var(--mr-secondary-position) no-repeat var(--mr-screen-background-color)",
+        progress_bar: true,
+        hide_secondary_section: "responsive",
+        logo: {},
+        title: {
+          string_id: "onboarding-easy-setup-security-and-privacy-title",
+        },
+        subtitle: {
+          string_id: "onboarding-easy-setup-security-and-privacy-subtitle",
+        },
+        tiles: {
+          type: "multiselect",
+          data: [
+            {
+              id: "checkbox-1",
+              defaultValue: true,
+              label: {
+                string_id: "mr2022-onboarding-pin-primary-button-label",
+              },
+              action: {
+                type: "PIN_FIREFOX_TO_TASKBAR",
+              },
+            },
+            {
+              id: "checkbox-2",
+              defaultValue: true,
+              label: {
+                string_id:
+                  "mr2022-onboarding-easy-setup-set-default-checkbox-label",
+              },
+              action: {
+                type: "SET_DEFAULT_BROWSER",
+              },
+            },
+            {
+              id: "checkbox-3",
+              defaultValue: true,
+              label: {
+                string_id: "mr2022-onboarding-easy-setup-import-checkbox-label",
+              },
+              uncheckedAction: {
+                type: "MULTI_ACTION",
+                data: {
+                  actions: [
+                    {
+                      type: "SET_PREF",
+                      data: {
+                        pref: {
+                          name: "showEmbeddedImport",
+                        },
+                      },
+                    },
+                  ],
+                },
+              },
+              checkedAction: {
+                type: "MULTI_ACTION",
+                data: {
+                  actions: [
+                    {
+                      type: "SET_PREF",
+                      data: {
+                        pref: {
+                          name: "showEmbeddedImport",
+                          value: true,
+                        },
+                      },
+                    },
+                  ],
+                },
+              },
+            },
+          ],
+        },
+        primary_button: {
+          label: {
+            string_id: "mr2022-onboarding-easy-setup-primary-button-label",
+          },
+          action: {
+            type: "MULTI_ACTION",
+            collectSelect: true,
+            navigate: true,
+            data: {
+              actions: [],
+            },
+          },
+        },
+        secondary_button: {
+          label: {
+            string_id: "mr2022-onboarding-secondary-skip-button-label",
+          },
+          action: {
+            navigate: true,
+          },
+          has_arrow_icon: true,
+        },
+        secondary_button_top: {
+          label: {
+            string_id: "mr1-onboarding-sign-in-button-label",
+          },
+          action: {
+            data: {
+              entrypoint: "activity-stream-firstrun",
+              where: "tab",
+            },
+            type: "SHOW_FIREFOX_ACCOUNTS",
+            addFlowParams: true,
+          },
+        },
+      },
+    },
+    {
+      id: "AW_EASY_SETUP_NEEDS_DEFAULT",
+      targeting:
+        "!doesAppNeedPin && 'browser.shell.checkDefaultBrowser'|preferenceValue && !isDefaultBrowser",
+      content: {
+        position: "split",
+        split_narrow_bkg_position: "-60px",
+        image_alt_text: {
+          string_id: "mr2022-onboarding-default-image-alt",
+        },
+        background:
+          "url('chrome://activity-stream/content/data/content/assets/mr-settodefault.svg') var(--mr-secondary-position) no-repeat var(--mr-screen-background-color)",
+        progress_bar: true,
+        logo: {},
+        title: {
+          string_id: "onboarding-easy-setup-security-and-privacy-title",
+        },
+        subtitle: {
+          string_id: "onboarding-easy-setup-security-and-privacy-subtitle",
+        },
+        tiles: {
+          type: "multiselect",
+          data: [
+            {
+              id: "checkbox-1",
+              defaultValue: true,
+              label: {
+                string_id:
+                  "mr2022-onboarding-easy-setup-set-default-checkbox-label",
+              },
+              action: {
+                type: "SET_DEFAULT_BROWSER",
+              },
+            },
+            {
+              id: "checkbox-2",
+              defaultValue: true,
+              label: {
+                string_id: "mr2022-onboarding-easy-setup-import-checkbox-label",
+              },
+              uncheckedAction: {
+                type: "MULTI_ACTION",
+                data: {
+                  actions: [
+                    {
+                      type: "SET_PREF",
+                      data: {
+                        pref: {
+                          name: "showEmbeddedImport",
+                        },
+                      },
+                    },
+                  ],
+                },
+              },
+              checkedAction: {
+                type: "MULTI_ACTION",
+                data: {
+                  actions: [
+                    {
+                      type: "SET_PREF",
+                      data: {
+                        pref: {
+                          name: "showEmbeddedImport",
+                          value: true,
+                        },
+                      },
+                    },
+                  ],
+                },
+              },
+            },
+          ],
+        },
+        primary_button: {
+          label: {
+            string_id: "mr2022-onboarding-easy-setup-primary-button-label",
+          },
+          action: {
+            type: "MULTI_ACTION",
+            collectSelect: true,
+            navigate: true,
+            data: {
+              actions: [],
+            },
+          },
+        },
+        secondary_button: {
+          label: {
+            string_id: "mr2022-onboarding-secondary-skip-button-label",
+          },
+          action: {
+            navigate: true,
+          },
+          has_arrow_icon: true,
+        },
+        secondary_button_top: {
+          label: {
+            string_id: "mr1-onboarding-sign-in-button-label",
+          },
+          action: {
+            data: {
+              entrypoint: "activity-stream-firstrun",
+              where: "tab",
+            },
+            type: "SHOW_FIREFOX_ACCOUNTS",
+            addFlowParams: true,
+          },
+        },
+      },
+    },
+    {
+      id: "AW_EASY_SETUP_NEEDS_PIN",
+      targeting:
+        "doesAppNeedPin && (!'browser.shell.checkDefaultBrowser'|preferenceValue || isDefaultBrowser)",
+      content: {
+        position: "split",
+        split_narrow_bkg_position: "-60px",
+        image_alt_text: {
+          string_id: "mr2022-onboarding-default-image-alt",
+        },
+        background:
+          "url('chrome://activity-stream/content/data/content/assets/mr-settodefault.svg') var(--mr-secondary-position) no-repeat var(--mr-screen-background-color)",
+        progress_bar: true,
+        logo: {},
+        title: {
+          string_id: "onboarding-easy-setup-security-and-privacy-title",
+        },
+        subtitle: {
+          string_id: "onboarding-easy-setup-security-and-privacy-subtitle",
+        },
+        tiles: {
+          type: "multiselect",
+          data: [
+            {
+              id: "checkbox-1",
+              defaultValue: true,
+              label: {
+                string_id: "mr2022-onboarding-pin-primary-button-label",
+              },
+              action: {
+                type: "PIN_FIREFOX_TO_TASKBAR",
+              },
+            },
+            {
+              id: "checkbox-2",
+              defaultValue: true,
+              label: {
+                string_id: "mr2022-onboarding-easy-setup-import-checkbox-label",
+              },
+              uncheckedAction: {
+                type: "MULTI_ACTION",
+                data: {
+                  actions: [
+                    {
+                      type: "SET_PREF",
+                      data: {
+                        pref: {
+                          name: "showEmbeddedImport",
+                        },
+                      },
+                    },
+                  ],
+                },
+              },
+              checkedAction: {
+                type: "MULTI_ACTION",
+                data: {
+                  actions: [
+                    {
+                      type: "SET_PREF",
+                      data: {
+                        pref: {
+                          name: "showEmbeddedImport",
+                          value: true,
+                        },
+                      },
+                    },
+                  ],
+                },
+              },
+            },
+          ],
+        },
+        primary_button: {
+          label: {
+            string_id: "mr2022-onboarding-easy-setup-primary-button-label",
+          },
+          action: {
+            type: "MULTI_ACTION",
+            collectSelect: true,
+            navigate: true,
+            data: {
+              actions: [],
+            },
+          },
+        },
+        secondary_button: {
+          label: {
+            string_id: "mr2022-onboarding-secondary-skip-button-label",
+          },
+          action: {
+            navigate: true,
+          },
+          has_arrow_icon: true,
+        },
+        secondary_button_top: {
+          label: {
+            string_id: "mr1-onboarding-sign-in-button-label",
+          },
+          action: {
+            data: {
+              entrypoint: "activity-stream-firstrun",
+              where: "tab",
+            },
+            type: "SHOW_FIREFOX_ACCOUNTS",
+            addFlowParams: true,
+          },
+        },
+      },
+    },
+    {
+      id: "AW_EASY_SETUP_ONLY_IMPORT",
+      targeting:
+        "!doesAppNeedPin && (!'browser.shell.checkDefaultBrowser'|preferenceValue || isDefaultBrowser)",
+      content: {
+        position: "split",
+        split_narrow_bkg_position: "-60px",
+        image_alt_text: {
+          string_id: "mr2022-onboarding-default-image-alt",
+        },
+        background:
+          "url('chrome://activity-stream/content/data/content/assets/mr-settodefault.svg') var(--mr-secondary-position) no-repeat var(--mr-screen-background-color)",
+        progress_bar: true,
+        logo: {},
+        title: {
+          string_id: "onboarding-easy-setup-security-and-privacy-title",
+        },
+        subtitle: {
+          string_id: "onboarding-easy-setup-security-and-privacy-subtitle",
+        },
+        tiles: {
+          type: "multiselect",
+          data: [
+            {
+              id: "checkbox-1",
+              defaultValue: true,
+              label: {
+                string_id: "mr2022-onboarding-easy-setup-import-checkbox-label",
+              },
+              uncheckedAction: {
+                type: "MULTI_ACTION",
+                data: {
+                  actions: [
+                    {
+                      type: "SET_PREF",
+                      data: {
+                        pref: {
+                          name: "showEmbeddedImport",
+                        },
+                      },
+                    },
+                  ],
+                },
+              },
+              checkedAction: {
+                type: "MULTI_ACTION",
+                data: {
+                  actions: [
+                    {
+                      type: "SET_PREF",
+                      data: {
+                        pref: {
+                          name: "showEmbeddedImport",
+                          value: true,
+                        },
+                      },
+                    },
+                  ],
+                },
+              },
+            },
+          ],
+        },
+        primary_button: {
+          label: {
+            string_id: "mr2022-onboarding-easy-setup-primary-button-label",
+          },
+          action: {
+            type: "MULTI_ACTION",
+            collectSelect: true,
+            navigate: true,
+            data: {
+              actions: [],
+            },
+          },
+        },
+        secondary_button: {
+          label: {
+            string_id: "mr2022-onboarding-secondary-skip-button-label",
+          },
+          action: {
+            navigate: true,
+          },
+          has_arrow_icon: true,
+        },
+        secondary_button_top: {
+          label: {
+            string_id: "mr1-onboarding-sign-in-button-label",
+          },
+          action: {
+            data: {
+              entrypoint: "activity-stream-firstrun",
+              where: "tab",
+            },
+            type: "SHOW_FIREFOX_ACCOUNTS",
+            addFlowParams: true,
+          },
+        },
+      },
+    },
+    {
+      id: "AW_LANGUAGE_MISMATCH",
+      content: {
+        position: "split",
+        background: "var(--mr-screen-background-color)",
+        progress_bar: true,
+        logo: {},
+        title: {
+          string_id: "mr2022-onboarding-live-language-text",
+        },
+        subtitle: {
+          string_id: "mr2022-language-mismatch-subtitle",
+        },
+        hero_text: {
+          string_id: "mr2022-onboarding-live-language-text",
+          useLangPack: true,
+        },
+        languageSwitcher: {
+          downloading: {
+            string_id: "onboarding-live-language-button-label-downloading",
+          },
+          cancel: {
+            string_id: "onboarding-live-language-secondary-cancel-download",
+          },
+          waiting: { string_id: "onboarding-live-language-waiting-button" },
+          skip: { string_id: "mr2022-onboarding-secondary-skip-button-label" },
+          action: {
+            navigate: true,
+          },
+          switch: {
+            string_id: "mr2022-onboarding-live-language-switch-to",
+            useLangPack: true,
+          },
+          continue: {
+            string_id: "mr2022-onboarding-live-language-continue-in",
+          },
+        },
+      },
+    },
+    {
+      id: "AW_IMPORT_SETTINGS_EMBEDDED",
+      targeting: `("messaging-system-action.showEmbeddedImport" |preferenceValue == true) && useEmbeddedMigrationWizard`,
+      content: {
+        tiles: { type: "migration-wizard" },
+        position: "split",
+        split_narrow_bkg_position: "-42px",
+        image_alt_text: {
+          string_id: "mr2022-onboarding-import-image-alt",
+        },
+        background:
+          "url('chrome://activity-stream/content/data/content/assets/mr-import.svg') var(--mr-secondary-position) no-repeat var(--mr-screen-background-color)",
+        progress_bar: true,
+        hide_secondary_section: "responsive",
+        migrate_start: {
+          action: {},
+        },
+        migrate_close: {
+          action: {
+            navigate: true,
+          },
+        },
+        secondary_button: {
+          label: {
+            string_id: "mr2022-onboarding-secondary-skip-button-label",
+          },
+          action: {
+            navigate: true,
+          },
+          has_arrow_icon: true,
+        },
+      },
+    },
+    {
+      id: "AW_MOBILE_DOWNLOAD",
+      // The mobile download screen should only be shown to users who
+      // are either not logged into FxA, or don't have any mobile devices syncing
+      targeting: "!isFxASignedIn || sync.mobileDevices == 0",
+      content: {
+        position: "split",
+        split_narrow_bkg_position: "-160px",
+        image_alt_text: {
+          string_id: "mr2022-onboarding-mobile-download-image-alt",
+        },
+        background:
+          "url('chrome://activity-stream/content/data/content/assets/mr-mobilecrosspromo.svg') var(--mr-secondary-position) no-repeat var(--mr-screen-background-color)",
+        progress_bar: true,
+        logo: {},
+        title: {
+          string_id: "onboarding-mobile-download-security-and-privacy-title",
+        },
+        subtitle: {
+          string_id: "onboarding-mobile-download-security-and-privacy-subtitle",
+        },
+        hero_image: {
+          url: "chrome://activity-stream/content/data/content/assets/mobile-download-qr-new-user.svg",
+        },
+        cta_paragraph: {
+          text: {
+            string_id: "mr2022-onboarding-mobile-download-cta-text",
+            string_name: "download-label",
+          },
+          action: {
+            type: "OPEN_URL",
+            data: {
+              args: "https://www.mozilla.org/firefox/mobile/get-app/?utm_medium=firefox-desktop&utm_source=onboarding-modal&utm_campaign=mr2022&utm_content=new-global",
+              where: "tab",
+            },
+          },
+        },
+        secondary_button: {
+          label: {
+            string_id: "mr2022-onboarding-secondary-skip-button-label",
+          },
+          action: {
+            navigate: true,
+          },
+          has_arrow_icon: true,
+        },
+      },
+    },
+    {
+      id: "AW_AMO_INTRODUCE",
+      // Show to en-* locales only
+      targeting: "localeLanguageCode == 'en'",
+      content: {
+        position: "split",
+        split_narrow_bkg_position: "-58px",
+        background:
+          "url('chrome://activity-stream/content/data/content/assets/mr-amo-collection.svg') var(--mr-secondary-position) no-repeat var(--mr-screen-background-color)",
+        progress_bar: true,
+        logo: {},
+        title: { string_id: "amo-screen-title" },
+        subtitle: { string_id: "amo-screen-subtitle" },
+        primary_button: {
+          label: { string_id: "amo-screen-primary-cta" },
+          action: {
+            type: "OPEN_URL",
+            data: {
+              args: "https://addons.mozilla.org/en-US/firefox/collections/4757633/25c2b44583534b3fa8fea977c419cd/?page=1&collection_sort=-added",
+              where: "tabshifted",
+            },
+            navigate: true,
+          },
+        },
+        secondary_button: {
+          label: {
+            string_id: "mr2022-onboarding-secondary-skip-button-label",
+          },
+          action: {
+            navigate: true,
+          },
+        },
+      },
+    },
+    {
+      id: "AW_GRATITUDE",
+      content: {
+        position: "split",
+        split_narrow_bkg_position: "-228px",
+        image_alt_text: {
+          string_id: "mr2022-onboarding-gratitude-image-alt",
+        },
+        background:
+          "url('chrome://activity-stream/content/data/content/assets/mr-gratitude.svg') var(--mr-secondary-position) no-repeat var(--mr-screen-background-color)",
+        progress_bar: true,
+        logo: {},
+        title: {
+          string_id: "onboarding-gratitude-security-and-privacy-title",
+        },
+        subtitle: {
+          string_id: "onboarding-gratitude-security-and-privacy-subtitle",
+        },
+        primary_button: {
+          label: {
+            string_id: "mr2-onboarding-start-browsing-button-label",
+          },
+          action: {
+            navigate: true,
+          },
+        },
+      },
+    },
+  ],
+};
+
+async function getAddonFromRepository(data) {
+  const [addonInfo] = await lazy.AddonRepository.getAddonsByIDs([data]);
+  if (addonInfo.sourceURI.scheme !== "https") {
+    return null;
+  }
+
+  return {
+    name: addonInfo.name,
+    url: addonInfo.sourceURI.spec,
+    iconURL: addonInfo.icons["64"] || addonInfo.icons["32"],
+    type: addonInfo.type,
+    screenshots: addonInfo.screenshots,
+  };
+}
+
+async function getAddonInfo(attrbObj) {
+  let { content, source } = attrbObj;
+  try {
+    if (!content || source !== "addons.mozilla.org") {
+      return null;
+    }
+    // Attribution data can be double encoded
+    while (content.includes("%")) {
+      try {
+        const result = decodeURIComponent(content);
+        if (result === content) {
+          break;
+        }
+        content = result;
+      } catch (e) {
+        break;
+      }
+    }
+    // return_to_amo embeds the addon id in the content
+    // param, prefixed with "rta:".  Translating that
+    // happens in AddonRepository, however we can avoid
+    // an API call if we check up front here.
+    if (content.startsWith("rta:")) {
+      return await getAddonFromRepository(content);
+    }
+  } catch (e) {
+    console.error("Failed to get the latest add-on version for Return to AMO");
+  }
+  return null;
+}
+
+async function getAttributionContent() {
+  let attribution = await lazy.AttributionCode.getAttrDataAsync();
+  if (attribution?.source === "addons.mozilla.org") {
+    let addonInfo = await getAddonInfo(attribution);
+    if (addonInfo) {
+      return {
+        ...addonInfo,
+        template: "return_to_amo",
+      };
+    }
+  }
+  if (attribution?.ua) {
+    return {
+      ua: decodeURIComponent(attribution.ua),
+    };
+  }
+  return null;
+}
+
+// Return default multistage welcome content
+function getDefaults() {
+  return Cu.cloneInto(MR_ABOUT_WELCOME_DEFAULT, {});
+}
+
+let gSourceL10n = null;
+
+// Localize Firefox download source from user agent attribution to show inside
+// import primary button label such as 'Import from <localized browser name>'.
+// no firefox as import wizard doesn't show it
+const allowedUAs = ["chrome", "edge", "ie"];
+function getLocalizedUA(ua) {
+  if (!gSourceL10n) {
+    gSourceL10n = new Localization(["browser/migrationWizard.ftl"]);
+  }
+  if (allowedUAs.includes(ua)) {
+    return gSourceL10n.formatValue(`migration-source-name-${ua.toLowerCase()}`);
+  }
+  return null;
+}
+
+function prepareMobileDownload(content) {
+  let mobileContent = content?.screens?.find(
+    screen => screen.id === "AW_MOBILE_DOWNLOAD"
+  )?.content;
+
+  if (!mobileContent) {
+    return content;
+  }
+  if (!lazy.BrowserUtils.sendToDeviceEmailsSupported()) {
+    // If send to device emails are not supported for a user's locale,
+    // remove the send to device link and update the screen text
+    delete mobileContent.cta_paragraph.action;
+    mobileContent.cta_paragraph.text = {
+      string_id: "mr2022-onboarding-no-mobile-download-cta-text",
+    };
+  }
+  // Update CN specific QRCode url
+  if (AppConstants.isChinaRepack()) {
+    mobileContent.hero_image.url = `${mobileContent.hero_image.url.slice(
+      0,
+      mobileContent.hero_image.url.indexOf(".svg")
+    )}-cn.svg`;
+  }
+
+  return content;
+}
+
+async function prepareContentForReact(content) {
+  const { screens } = content;
+
+  if (content?.template === "return_to_amo") {
+    return content;
+  }
+
+  // Set the primary import button source based on attribution.
+  if (content?.ua) {
+    // If available, add the browser source to action data
+    // and localized browser string args to primary button label
+    const { label, action } =
+      content?.screens?.find(
+        screen =>
+          screen?.content?.primary_button?.action?.type ===
+          "SHOW_MIGRATION_WIZARD"
+      )?.content?.primary_button ?? {};
+
+    if (action) {
+      action.data = { ...action.data, source: content.ua };
+    }
+
+    let browserStr = await getLocalizedUA(content.ua);
+
+    if (label?.string_id) {
+      label.string_id = browserStr
+        ? "mr1-onboarding-import-primary-button-label-attribution"
+        : "mr2022-onboarding-import-primary-button-label-no-attribution";
+
+      label.args = browserStr ? { previous: browserStr } : {};
+    }
+  }
+
+  // Remove Firefox Accounts related UI and prevent related metrics.
+  if (!Services.prefs.getBoolPref("identity.fxaccounts.enabled", false)) {
+    delete content.screens?.find(
+      screen =>
+        screen.content?.secondary_button_top?.action?.type ===
+        "SHOW_FIREFOX_ACCOUNTS"
+    )?.content.secondary_button_top;
+    content.skipFxA = true;
+  }
+
+  let shouldRemoveLanguageMismatchScreen = true;
+  if (content.languageMismatchEnabled) {
+    const screen = content?.screens?.find(s => s.id === "AW_LANGUAGE_MISMATCH");
+    if (screen && content.appAndSystemLocaleInfo.canLiveReload) {
+      // Add the display names for the OS and Firefox languages, like "American English".
+      function addMessageArgs(obj) {
+        for (const value of Object.values(obj)) {
+          if (value?.string_id) {
+            value.args = content.appAndSystemLocaleInfo.displayNames;
+          }
+        }
+      }
+
+      addMessageArgs(screen.content.languageSwitcher);
+      addMessageArgs(screen.content);
+      shouldRemoveLanguageMismatchScreen = false;
+    }
+  }
+
+  if (shouldRemoveLanguageMismatchScreen) {
+    await lazy.AWScreenUtils.removeScreens(
+      screens,
+      screen => screen.id === "AW_LANGUAGE_MISMATCH"
+    );
+  }
+
+  return prepareMobileDownload(content);
+}
+
+export const AboutWelcomeDefaults = {
+  prepareContentForReact,
+  getDefaults,
+  getAttributionContent,
+};