[Android] Allow setting recently visited search engines as default search engine

chrome/android/java/strings/android_chrome_strings.grd

Index: chrome/android/java/strings/android_chrome_strings.grd
diff --git a/chrome/android/java/strings/android_chrome_strings.grd b/chrome/android/java/strings/android_chrome_strings.grd
index 884ca612a60539e80d1d0186b7fef12dbc361c9b..c6737d05725727bf1203d4282345267fca7bfdb5 100644
--- a/chrome/android/java/strings/android_chrome_strings.grd
+++ b/chrome/android/java/strings/android_chrome_strings.grd
@@ -257,6 +257,9 @@ CHAR-LIMIT guidelines:
       <message name="IDS_SEARCH_ENGINE_LOCATION_BLOCKED" desc="The text of a link displayed when location permission for a particular search engine is blocked.">
         Location is blocked
       </message>
+      <message name="IDS_RECENTLY_VISITED" desc="The title of recently visited search engine list view.">

[Ian Wen, 2016/09/27 04:42:00]

IDS_SEARCH_ENGINE_RECENTLY_VISITED

[ltian, 2016/09/28 19:19:47]

Done.

+        Recently visited
+      </message>
 
       <!-- Autofill preferences -->
       <message name="IDS_PREFS_AUTOFILL" desc="Title for 'Autofill forms' settings, which control what personal data can be automatically filled into web page forms. [CHAR-LIMIT=32]">