[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 b212a68e0ee4a904b4293bbc7ea1ef5cc1133e9b..bfff3761741a9ae4cdbe674b7df6eb48ef82dfb1 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_SEARCH_ENGINE_RECENTLY_VISITED" desc="The title of recently visited search engine list view.">

[gone, 2016/11/01 21:30:29]

Title indicating that everything following represents recently visited pages
that may support search queries?

[ltian, 2016/11/01 22:59:36]

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]">