Extend FaviconService to support fetching favicons from a Google server

chrome/browser/android/favicon_helper.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/android/favicon_helper.h"
 
 #include <jni.h>
 #include <stddef.h>
 
 #include <vector>
@@ skipping 132 matching lines @@
   gfx::Image favicon_image = gfx::Image::CreateFrom1xPNGBytes(favicon_png);
   SkBitmap favicon_bitmap = favicon_image.AsBitmap();
 
   ScopedJavaLocalRef<jobject> j_favicon_bitmap;
   if (favicon_bitmap.isNull())
     return ScopedJavaLocalRef<jobject>();
 
   return gfx::ConvertToJavaBitmap(&favicon_bitmap);
 }
 
+// TODO(jkrcal): change this code to use
+// FaviconService::Get1xFaviconForPageURLDownloadFromGoogleServerIfMissing.
 void FaviconHelper::EnsureIconIsAvailable(
     JNIEnv* env,
     const JavaParamRef<jobject>& obj,
     const JavaParamRef<jobject>& j_profile,
     const JavaParamRef<jobject>& j_web_contents,
     const JavaParamRef<jstring>& j_page_url,
     const JavaParamRef<jstring>& j_icon_url,
     jboolean j_is_large_icon,
     jboolean j_is_temporary,
     const JavaParamRef<jobject>& j_availability_callback) {
@@ skipping 109 matching lines @@
 
   web_contents->DownloadImage(
       icon_url, true, 0, false,
       base::Bind(OnFaviconDownloaded, j_availability_callback, profile,
                  page_url, icon_type, is_temporary));
 }
 
 bool FaviconHelper::RegisterFaviconHelper(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }