Browser: add to support search engine preset

1. Set Baidu search engine as the default search engine.
2. Add 139 search engine for carrier.

CRs-fixed: 507955

Change-Id: Idccc86f2d9ac439dcfff5f65e853bb4618fed361
diff --git a/res/values/donottranslate-search_engines.xml b/res/values/donottranslate-search_engines.xml
index c6ed9ca..081efc0 100644
--- a/res/values/donottranslate-search_engines.xml
+++ b/res/values/donottranslate-search_engines.xml
@@ -23,7 +23,10 @@
 <resources xmlns:xliff="urn:oasis:names:tc:xliff:document:1.2">
   <string-array name="search_engines" translatable="false">
     <item>google</item>
+    <item>baidu</item>
+    <item>cmcc</item>
     <item>yahoo</item>
     <item>bing</item>
   </string-array>
+  <string name="default_search_engine_value">baidu</string>
 </resources>