For #14727: Add content description to resync tabs button.

app/src/main/res/layout/view_synced_tabs_title.xml

@@ -6,6 +6,7 @@
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
+    android:importantForAccessibility="no"
     android:orientation="horizontal">
 
     <TextView
@@ -25,6 +26,7 @@
         android:layout_marginTop="48dp"
         android:layout_marginEnd="4dp"
         android:background="?android:attr/selectableItemBackgroundBorderless"
+        android:contentDescription="@string/resync_button_content_description"
         app:srcCompat="@drawable/mozac_ic_refresh"
         app:tint="?primaryText" />
 

app/src/main/res/values/strings.xml

@@ -143,6 +143,8 @@
     <string name="browser_menu_install_on_homescreen">Install</string>
     <!-- Menu option on the toolbar that takes you to synced tabs page-->
     <string name="synced_tabs">Synced tabs</string>
+    <!-- Content description (not visible, for screen readers etc.) for the Resync tabs button -->
+    <string name="resync_button_content_description">Resync</string>
     <!-- Browser menu button that opens the find in page menu -->
     <string name="browser_menu_find_in_page">Find in page</string>
     <!-- Browser menu button that creates a private tab -->