Media Remoting: Draw remoting interstitial on poster image.

content/renderer/image_downloader/image_downloader_core.h

-// Copyright 2015 The Chromium Authors. All rights reserved.
+// Copyright 2016 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 CONTENT_RENDERER_IMAGE_DOWNLOADER_IMAGE_DOWNLOADER_IMPL_H_
-#define CONTENT_RENDERER_IMAGE_DOWNLOADER_IMAGE_DOWNLOADER_IMPL_H_
+#ifndef CONTENT_RENDERER_IMAGE_DOWNLOADER_IMAGE_DOWNLOADER_CORE_H_
+#define CONTENT_RENDERER_IMAGE_DOWNLOADER_IMAGE_DOWNLOADER_CORE_H_
 
 #include <stdint.h>
 
 #include <vector>
 
-#include "base/macros.h"
+#include "base/callback.h"
 #include "base/memory/scoped_vector.h"
-#include "content/common/image_downloader/image_downloader.mojom.h"
-#include "content/public/renderer/render_frame_observer.h"
 #include "content/public/renderer/render_thread_observer.h"
-#include "mojo/public/cpp/bindings/binding.h"
+#include "third_party/skia/include/core/SkBitmap.h"
 #include "url/gurl.h"
 
-class SkBitmap;
-
-namespace gfx {
-class Size;
-}
-
 namespace content {
 
 class MultiResolutionImageResourceFetcher;
 class RenderFrame;
 
-class ImageDownloaderImpl : public mojom::ImageDownloader,
-                            public RenderFrameObserver,
-                            public RenderThreadObserver {
+class ImageDownloaderCore : public RenderThreadObserver {
  public:
-  ~ImageDownloaderImpl() override;
-
-  static void CreateMojoService(RenderFrame* render_frame,
-                                mojom::ImageDownloaderRequest request);
+  // |render_frame| outlives this class.
+  explicit ImageDownloaderCore(RenderFrame* render_frame);
+  ~ImageDownloaderCore() override;
 
   // RenderThreadObserver implementation.
   void OnRenderProcessShutdown() override;
 
- private:
-  ImageDownloaderImpl(RenderFrame* render_frame,
-                      mojom::ImageDownloaderRequest request);
-
-  // RenderFrameObserver implementation.
-  void OnDestruct() override;
-
-  // ImageDownloader methods:
+  using DownloadCallback =
+      base::Callback<void(int32_t, const std::vector<SkBitmap>&)>;
+  // Request to aynchronously download an image. When done, |callback| will be
+  // called.
   void DownloadImage(const GURL& url,
                      bool is_favicon,
-                     uint32_t max_bitmap_size,
                      bool bypass_cache,
-                     const DownloadImageCallback& callback) override;
+                     const DownloadCallback& callback);
 
+ private:
   // Requests to fetch an image. When done, the ImageDownloaderImpl

[miu, 2016/12/03 01:05:30]

s/ImageDownloaderImpl/image downloader/

[xjz, 2016/12/06 19:50:55]

Done.

   // is notified by way of DidFetchImage. Returns true if the
   // request was successfully started, false otherwise.
   // If the image is a favicon, cookies will not be
   // sent nor accepted during download. If the image has multiple frames, all
-  // the frames whose size <= |max_image_size| are returned. If all of the
-  // frames are larger than |max_image_size|, the smallest frame is resized to
-  // |max_image_size| and is the only result. |max_image_size| == 0 is
-  // interpreted as no max image size.
+  // frames are returned.
   bool FetchImage(const GURL& image_url,
                   bool is_favicon,
-                  uint32_t max_image_size,
                   bool bypass_cache,
-                  const DownloadImageCallback& callback);
+                  const DownloadCallback& callback);
 
   // This callback is triggered when FetchImage completes, either
   // succesfully or with a failure. See FetchImage for more
   // details.
-  void DidFetchImage(uint32_t max_image_size,
-                     const DownloadImageCallback& callback,
+  void DidFetchImage(const DownloadCallback& callback,
                      MultiResolutionImageResourceFetcher* fetcher,
                      const std::vector<SkBitmap>& images);
 
-  // Reply download result
-  void ReplyDownloadResult(
-      int32_t http_status_code,
-      const std::vector<SkBitmap>& result_images,
-      const std::vector<gfx::Size>& result_original_image_sizes,
-      const DownloadImageCallback& callback);
-
   typedef ScopedVector<MultiResolutionImageResourceFetcher>
       ImageResourceFetcherList;
 
   // ImageResourceFetchers schedule via FetchImage.
   ImageResourceFetcherList image_fetchers_;
 
-  mojo::Binding<mojom::ImageDownloader> binding_;
+  RenderFrame* const render_frame_;  // Outlives this class.
 
-  DISALLOW_COPY_AND_ASSIGN(ImageDownloaderImpl);
+  DISALLOW_COPY_AND_ASSIGN(ImageDownloaderCore);
 };
 
 }  // namespace content
 
-#endif  // CONTENT_RENDERER_IMAGE_DOWNLOADER_IMAGE_DOWNLOADER_IMPL_H_
+#endif  // CONTENT_RENDERER_IMAGE_DOWNLOADER_IMAGE_DOWNLOADER_CORE_H_