[Enhanced Bookmark]Upstream image fetching code in android

chrome/browser/enhanced_bookmarks/android/bookmark_image_service_factory.cc

+// Copyright 2015 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/enhanced_bookmarks/android/bookmark_image_service_android.h"
+#include "chrome/browser/enhanced_bookmarks/android/bookmark_image_service_factory.h"
+#include "components/keyed_service/content/browser_context_dependency_manager.h"
+#include "content/public/browser/browser_context.h"
+
+namespace enhanced_bookmarks {
+
+// static
+BookmarkImageServiceFactory* BookmarkImageServiceFactory::GetInstance() {
+  return Singleton<BookmarkImageServiceFactory>::get();
+}
+
+// static
+BookmarkImageService* BookmarkImageServiceFactory::GetForBrowserContext(
+    content::BrowserContext* context) {
+  return static_cast<BookmarkImageService*>(
+      GetInstance()->GetServiceForBrowserContext(context, true));
+}
+
+BookmarkImageServiceFactory::BookmarkImageServiceFactory()
+    : BrowserContextKeyedServiceFactory(
+          "BookmarkExtendedStorageService",
+          BrowserContextDependencyManager::GetInstance()) {}
+
+BookmarkImageServiceFactory::~BookmarkImageServiceFactory() {}
+
+content::BrowserContext* BookmarkImageServiceFactory::GetBrowserContextToUse(
+    content::BrowserContext* context) const {
+  return context;
+}
+
+BookmarkImageService* BookmarkImageServiceFactory::BuildServiceInstanceFor(
+    content::BrowserContext* browser_context) const {
+  return new BookmarkImageServiceAndroid(browser_context);
+}
+
+}  // namespace enhanced_bookmarks