Replace enhanced bookmarks salient images with favicons

chrome/browser/enhanced_bookmarks/android/bookmark_image_service_android.h

-// Copyright 2014 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_ANDROID_H_
-#define CHROME_BROWSER_ENHANCED_BOOKMARKS_ANDROID_BOOKMARK_IMAGE_SERVICE_ANDROID_H_
-
-#include "chrome/browser/bitmap_fetcher/bitmap_fetcher.h"
-#include "components/enhanced_bookmarks/bookmark_image_service.h"
-#include "content/public/common/referrer.h"
-
-namespace chrome {
-class BitmapFetcher;
-}
-
-namespace content {
-class BrowserContext;
-class RenderFrameHost;
-class WebContents;
-}
-
-namespace enhanced_bookmarks {
-
-class BookmarkImageServiceAndroid : public BookmarkImageService {
- public:
-  explicit BookmarkImageServiceAndroid(content::BrowserContext* browserContext);
-
-  ~BookmarkImageServiceAndroid() override;
-
-  void RetrieveSalientImage(const GURL& page_url,
-                            const GURL& image_url,
-                            const std::string& referrer,
-                            net::URLRequest::ReferrerPolicy referrer_policy,
-                            bool update_bookmark) override;
-
-  // Searches the current page for a salient image, if a url is found the image
-  // is fetched and stored.
-  void RetrieveSalientImageFromContext(
-      content::WebContents* web_contents,
-      const GURL& page_url,
-      bool update_bookmark);
-
-  // Investigates if the tab points to a bookmarked url in needs of an updated
-  // image. If it is, invokes RetrieveSalientImageFromContext() for the relevant
-  // urls.
-  void FinishSuccessfulPageLoadForTab(content::WebContents* web_contents,
-                                      bool update_bookmark);
-
- private:
-  // The callback for dom_initializer_script_. Once the DOM is initialized,
-  // this method starts execution of get_salient_image_url_script_.
-  void InitializeDomCallback(blink::WebReferrerPolicy policy,
-                             content::RenderFrameHost* render_frame_host,
-                             const GURL& page_url,
-                             bool update_bookmark,
-                             const base::Value* result);
-
-  // The callback for get_salient_image_url_srcipt. Parses the JSON from
-  // execution of get_salient_image_url_script_ to determine the URL for the
-  // salient image and invokes RetrieveSalientImage.
-  void RetrieveSalientImageFromContextCallback(blink::WebReferrerPolicy policy,
-                                               const GURL& page_url,
-                                               bool update_bookmark,
-                                               const base::Value* result);
-
-  scoped_ptr<gfx::Image> ResizeImage(const gfx::Image& image) override;
-
-  content::BrowserContext* browser_context_;
-
-  // The script injected in a page to initialize the DOM before extracting image
-  // urls.
-  base::string16 dom_initializer_script_;
-
-  // The script injected in a page to extract image urls.
-  base::string16 get_salient_image_url_script_;
-
-  // Maximum size for retrieved salient images in pixels. This is used when
-  // resizing an image.
-  gfx::Size max_size_;
-
-  class BitmapFetcherHandler : private chrome::BitmapFetcherDelegate {
-   public:
-    explicit BitmapFetcherHandler(BookmarkImageServiceAndroid* service,
-                                  const GURL& image_url)
-        : service_(service), bitmap_fetcher_(image_url, this) {}
-    void Start(content::BrowserContext* browser_context,
-               const std::string& referrer,
-               net::URLRequest::ReferrerPolicy referrer_policy,
-               int load_flags,
-               bool update_bookmark,
-               const GURL& page_url);
-    void OnFetchComplete(const GURL& url, const SkBitmap* bitmap) override;
-
-   protected:
-    ~BitmapFetcherHandler() override {}
-
-   private:
-    BookmarkImageServiceAndroid* service_;
-    chrome::BitmapFetcher bitmap_fetcher_;
-    bool update_bookmark_;
-    GURL page_url_;
-
-    DISALLOW_COPY_AND_ASSIGN(BitmapFetcherHandler);
-  };
-
-  DISALLOW_COPY_AND_ASSIGN(BookmarkImageServiceAndroid);
-};
-
-}  // namespace enhanced_bookmarks
-
-#endif  // CHROME_BROWSER_ENHANCED_BOOKMARKS_ANDROID_BOOKMARK_IMAGE_SERVICE_ANDROID_H_