Ensure all AssociatedURLLoader be cancelled before shutting down Blink.

content/renderer/image_downloader/image_downloader_impl.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 CONTENT_RENDERER_IMAGE_DOWNLOADER_IMAGE_DOWNLOADER_IMPL_H_
 #define CONTENT_RENDERER_IMAGE_DOWNLOADER_IMAGE_DOWNLOADER_IMPL_H_
 
 #include <stdint.h>
 
 #include <vector>
 
 #include "base/macros.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_process_observer.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 #include "url/gurl.h"
 
 class SkBitmap;
 
 namespace gfx {
 class Size;
 }
 
 namespace content {
 
 class MultiResolutionImageResourceFetcher;
 class RenderFrame;
 
 class ImageDownloaderImpl : public content::mojom::ImageDownloader,
-                            public RenderFrameObserver {
+                            public RenderFrameObserver,
+                            public RenderProcessObserver {
  public:
   static void CreateMojoService(
       RenderFrame* render_frame,
       mojo::InterfaceRequest<content::mojom::ImageDownloader> request);
 
+  // RenderProcessObserver implementation.
+  void OnRenderProcessShutdown() override;
+
  private:
   ImageDownloaderImpl(
       RenderFrame* render_frame,
       mojo::InterfaceRequest<content::mojom::ImageDownloader> request);
   ~ImageDownloaderImpl() override;
 
   // ImageDownloader methods:
   void DownloadImage(const mojo::String& url,
                      bool is_favicon,
                      uint32_t max_bitmap_size,
@@ skipping 38 matching lines @@
 
   // ImageResourceFetchers schedule via FetchImage.
   ImageResourceFetcherList image_fetchers_;
 
   DISALLOW_COPY_AND_ASSIGN(ImageDownloaderImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_IMAGE_DOWNLOADER_IMAGE_DOWNLOADER_IMPL_H_