content: Cleanup class/struct forward declarations

content/renderer/renderer_blink_platform_impl.h

 // Copyright (c) 2012 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_RENDERER_BLINK_PLATFORM_IMPL_H_
 #define CONTENT_RENDERER_RENDERER_BLINK_PLATFORM_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 
 #include "base/compiler_specific.h"
 #include "base/id_map.h"
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "cc/blink/web_compositor_support_impl.h"
 #include "content/child/blink_platform_impl.h"
 #include "content/child/child_shared_bitmap_manager.h"
 #include "content/common/content_export.h"
 #include "content/common/url_loader_factory.mojom.h"
 #include "content/renderer/origin_trials/web_trial_token_validator_impl.h"
 #include "content/renderer/top_level_blame_context.h"
 #include "content/renderer/webpublicsuffixlist_impl.h"
 #include "third_party/WebKit/public/platform/modules/indexeddb/WebIDBFactory.h"
 #include "third_party/WebKit/public/platform/modules/screen_orientation/WebScreenOrientationType.h"
 
-namespace cc {
-class ContextProvider;
-}
-
 namespace IPC {
 class SyncMessageFilter;
 }
 
 namespace blink {
 namespace scheduler {
 class RendererScheduler;
-class WebThreadImplForRendererScheduler;
 }
 class WebCanvasCaptureHandler;
 class WebDeviceMotionData;
 class WebDeviceOrientationData;
 class WebGraphicsContext3DProvider;
 class WebMediaPlayer;
 class WebMediaRecorderHandler;
 class WebMediaStream;
 class WebSecurityOrigin;
 class WebServiceWorkerCacheStorage;
 }
 
 namespace service_manager {
 class InterfaceProvider;
 }
 
 namespace content {
 class BlinkInterfaceProviderImpl;
 class LocalStorageCachedAreas;
 class PlatformEventObserverBase;
 class QuotaMessageFilter;
 class RendererClipboardDelegate;
-class RenderView;
 class ThreadSafeSender;
 class WebClipboardImpl;
 class WebDatabaseObserverImpl;
-class WebFileSystemImpl;
 
 class CONTENT_EXPORT RendererBlinkPlatformImpl : public BlinkPlatformImpl {
  public:
   RendererBlinkPlatformImpl(
       blink::scheduler::RendererScheduler* renderer_scheduler,
       base::WeakPtr<service_manager::InterfaceProvider> remote_interfaces);
   ~RendererBlinkPlatformImpl() override;
 
   // Shutdown must be called just prior to shutting down blink.
   void Shutdown();
@@ skipping 235 matching lines @@
   std::unique_ptr<BlinkInterfaceProviderImpl> blink_interface_provider_;
 
   mojom::URLLoaderFactoryAssociatedPtr url_loader_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RendererBlinkPlatformImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDERER_BLINK_PLATFORM_IMPL_H_