Implement native functions to query custom search engines for Android

chrome/browser/search_engines/template_url_service_android.h

Index: chrome/browser/search_engines/template_url_service_android.h
diff --git a/chrome/browser/search_engines/template_url_service_android.h b/chrome/browser/search_engines/template_url_service_android.h
index bdb90e5e339db50e94cdd784f10928183a33f9db..c49152c1d0c3a3de143f82ab315d4bd891acfef2 100644
--- a/chrome/browser/search_engines/template_url_service_android.h
+++ b/chrome/browser/search_engines/template_url_service_android.h
@@ -39,6 +39,10 @@ class TemplateUrlServiceAndroid : public TemplateURLServiceObserver {
       JNIEnv* env,
       const base::android::JavaParamRef<jobject>& obj,
       jint index);
+  base::android::ScopedJavaLocalRef<jobject> GetRecentTemplateUrlAt(

[Ian Wen, 2016/09/15 22:26:03]

I would remove this function. Reason stated below. 

[ltian, 2016/09/16 00:23:18]

Done.

+      JNIEnv* env,
+      const base::android::JavaParamRef<jobject>& obj,
+      jint index);
   jboolean IsSearchProviderManaged(
       JNIEnv* env,
       const base::android::JavaParamRef<jobject>& obj);