Media Remoting: Draw remoting interstitial on poster image.

content/renderer/image_downloader/image_downloader_base.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_BASE_H_
+#define CONTENT_RENDERER_IMAGE_DOWNLOADER_IMAGE_DOWNLOADER_BASE_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,
+class ImageDownloaderBase : public RenderFrameObserver,
                             public RenderThreadObserver {
  public:
-  ~ImageDownloaderImpl() override;
-
-  static void CreateMojoService(RenderFrame* render_frame,
-                                mojom::ImageDownloaderRequest request);
+  explicit ImageDownloaderBase(RenderFrame* render_frame);
+  ~ImageDownloaderBase() override;
 
   // RenderThreadObserver implementation.
   void OnRenderProcessShutdown() override;
 
- private:
-  ImageDownloaderImpl(RenderFrame* render_frame,
-                      mojom::ImageDownloaderRequest request);
+  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,
+                     bool bypass_cache,
+                     const DownloadCallback& callback);
 
+ protected:
   // RenderFrameObserver implementation.
   void OnDestruct() override;
 
-  // ImageDownloader methods:
-  void DownloadImage(const GURL& url,
-                     bool is_favicon,
-                     uint32_t max_bitmap_size,
-                     bool bypass_cache,
-                     const DownloadImageCallback& callback) override;
-
-  // Requests to fetch an image. When done, the ImageDownloaderImpl
-  // 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.
+ private:
+  // Requests to fetch an image. When done, the image downloader 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 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_;
-
-  DISALLOW_COPY_AND_ASSIGN(ImageDownloaderImpl);
+  DISALLOW_COPY_AND_ASSIGN(ImageDownloaderBase);
 };
 
 }  // namespace content
 
-#endif  // CONTENT_RENDERER_IMAGE_DOWNLOADER_IMAGE_DOWNLOADER_IMPL_H_
+#endif  // CONTENT_RENDERER_IMAGE_DOWNLOADER_IMAGE_DOWNLOADER_BASE_H_