Sync Autofill profile data native side

When the user adds or edits the AutoFill profile, sync that
data to the native WebKit code through the BrowserSettings
object. Also sync the profile data on startup if it is
available.

Change-Id: I6146a842cb765f8ed91c109537038baad6b547fb
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 29d8703..0b2d53a 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -355,6 +355,8 @@
     <string name="autofill_profile_editor_email_address">e-mail Address:</string>
     <!-- Button text to save the AutoFill profile [CHAR-LIMIT=20] -->
     <string name="autofill_profile_editor_save_profile">Save profile</string>
+    <!-- Toast message displayed when the profile has been successfully saved [CHAR-LIMIT=none] -->
+    <string name="autofill_profile_successful_save">Profile saved</string>
 
     <!-- Settings screen, section title -->
     <string name="pref_privacy_title">Privacy settings</string>