[Enhanced Bookmark]Upstream image fetching code in android

chrome/browser/enhanced_bookmarks/android/bookmark_image_service_factory.h

+// 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.
+
+#ifndef CHROME_BROWSER_ENHANCED_BOOKMARKS_ANDROID_BOOKMARK_IMAGE_SERVICE_FACTORY_H_
+#define CHROME_BROWSER_ENHANCED_BOOKMARKS_ANDROID_BOOKMARK_IMAGE_SERVICE_FACTORY_H_
+
+#include "components/enhanced_bookmarks/bookmark_image_service.h"
+#include "components/keyed_service/content/browser_context_keyed_service_factory.h"
+
+namespace enhanced_bookmarks {
+
+class BookmarkImageServiceFactory : public BrowserContextKeyedServiceFactory {
+ public:
+  static BookmarkImageServiceFactory* GetInstance();
+  static BookmarkImageService* GetForBrowserContext(
+      content::BrowserContext* context);
+
+  virtual ~BookmarkImageServiceFactory();
+
+ private:
+  friend struct DefaultSingletonTraits<BookmarkImageServiceFactory>;
+
+  BookmarkImageServiceFactory();
+
+  BookmarkImageService* BuildServiceInstanceFor(
+      content::BrowserContext* context) const override;
+
+  content::BrowserContext* GetBrowserContextToUse(
+      content::BrowserContext* context) const override;
+};
+
+}  // namespace enhanced_bookmarks
+
+#endif  // CHROME_BROWSER_ENHANCED_BOOKMARKS_ANDROID_BOOKMARK_IMAGE_SERVICE_FACTORY_H_