[unified-consent] Add top-level master toggle to sync settings

The UI of the top-level master toggle is added to sync settings.

For now the toggle changes whether all data types of sync should
be turned on or only a custom selection (taken over from before).
This should be changed once the unified consent service is implemented.

Bug: 800974
Cq-Include-Trybots: master.tryserver.chromium.linux:closure_compilation
Change-Id: I7eea3059ab90a3e47d9d5306e4a6359efdba0cf5
Reviewed-on: https://chromium-review.googlesource.com/1023934
Commit-Queue: Thomas Tangl <tangltom@chromium.org>
Reviewed-by: Scott Chen <scottchen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#553525}

chrome/app/settings_strings.grdp

@@ -3029,6 +3029,12 @@
   <message name="IDS_SETTINGS_CHANGE_PICTURE_PROFILE_PHOTO" desc="The text on the Google profile photo of the user.">
     Google Profile photo
   </message>
+  <message name="IDS_SETTINGS_PEOPLE_SYNC_UNIFIED_CONSENT_TOGGLE_TITLE" desc="The title of the toggle to opt into unified consent and enable all its services.">
+    Sync and personalize Chrome across you devices
+  </message>
+  <message name="IDS_SETTINGS_PEOPLE_SYNC_UNIFIED_CONSENT_TOGGLE_SUBTITLE" desc="The subtitle of the toggle to opt into unified consent and enable all its services.">
+    Uses content on sites you visit and browser activity and interations.
+  </message>
 
   <if expr="chromeos">
     <message name="IDS_SETTINGS_PEOPLE_CONFIGURE_PIN_CHOOSE_PIN_TITLE" desc="Message shown below the title that tells the user to enter the initial PIN.">

chrome/browser/resources/settings/people_page/sync_page.html

@@ -105,6 +105,21 @@
       </settings-sync-account-control>
     </template>
 </if>
+    <div class="settings-box first two-line"
+        hidden="[[!unifiedConsentEnabled]]">
+      <div class="start">
+        <div>$i18n{syncUnifiedConsentToggleTitle}</div>
+        <div class="secondary">$i18n{syncUnifiedConsentToggleSubtitle}</div>
+      </div>
+      <!-- For now this toggle only turns on all sync services.
+           TODO(crbug.com/800974): Add custom function for turning
+           on all unified consent services.-->
+      <cr-toggle id="syncAllDataTypesControl"
+          checked="{{syncPrefs.syncAllDataTypes}}"
+          on-change="onSyncAllDataTypesChanged_"
+          aria-labelledby="syncUnifiedConsentToggleTitle">
+      </cr-toggle>
+    </div>
     <div class="settings-box first two-line" id="sync-section-toggle"
         actionable$="[[!syncSectionDisabled_]]"
         on-click="toggleExpandButton_"

chrome/browser/ui/webui/settings/md_settings_localized_strings_provider.cc

@@ -1549,6 +1549,10 @@ void AddPeopleStrings(content::WebUIDataSource* html_source, Profile* profile) {
     {"syncSignInPrompt", IDS_SETTINGS_SYNC_SIGN_IN_PROMPT},
     {"syncSignInPromptSecondary", IDS_SETTINGS_SYNC_SIGN_IN_PROMPT_SECONDARY},
 #endif
+    {"syncUnifiedConsentToggleTitle",
+     IDS_SETTINGS_PEOPLE_SYNC_UNIFIED_CONSENT_TOGGLE_TITLE},
+    {"syncUnifiedConsentToggleSubtitle",
+     IDS_SETTINGS_PEOPLE_SYNC_UNIFIED_CONSENT_TOGGLE_SUBTITLE},
     {"syncOverview", IDS_SETTINGS_SYNC_OVERVIEW},
     {"syncDisabledByAdministrator",
      IDS_SETTINGS_SYNC_DISABLED_BY_ADMINISTRATOR},