content: Cleanup class/struct forward declarations

content/renderer/render_frame_impl.h

 // Copyright 2013 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_RENDER_FRAME_IMPL_H_
 #define CONTENT_RENDERER_RENDER_FRAME_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 52 matching lines @@
 #include "url/gurl.h"
 
 #if defined(ENABLE_PLUGINS)
 #include "content/renderer/pepper/plugin_power_saver_helper.h"
 #endif
 
 #if defined(OS_ANDROID)
 #include "content/renderer/media/android/renderer_media_player_manager.h"
 #endif
 
-class TransportDIB;
 struct FrameMsg_PostMessage_Params;
 struct FrameMsg_SerializeAsMHTML_Params;
 struct FrameMsg_TextTrackSettings_Params;
 
-namespace IPC {
-class SyncMessage;
-}
-
 namespace blink {
 class InterfaceRegistry;
 class WebContentDecryptionModule;
-class WebMouseEvent;
 class WebPresentationClient;
 class WebPushClient;
 class WebSecurityOrigin;
 enum class WebCachePolicy;
 struct WebCompositionUnderline;
 struct WebContextMenuData;
 struct WebCursorInfo;
 struct WebFindOptions;
 }  // namespace blink
 
 namespace gfx {
 class Point;
 class Range;
 class Rect;
 }
 
 namespace media {
 class CdmFactory;
 class DecoderFactory;
 class MediaPermission;
-class MediaServiceProvider;
 class RemotingController;
 class RendererWebMediaPlayerDelegate;
 class SurfaceManager;
 class UrlIndex;
 class WebEncryptedMediaClientImpl;
 }
 
 namespace service_manager {
 class InterfaceRegistry;
 class InterfaceProvider;
@@ skipping 11 matching lines @@
 class CompositorDependencies;
 class DevToolsAgent;
 class DocumentState;
 class ExternalPopupMenu;
 class HistoryEntry;
 class ManifestManager;
 class MediaInterfaceProvider;
 class MediaStreamDispatcher;
 class MediaStreamRendererFactory;
 class MediaPermissionDispatcher;
-class MidiDispatcher;
 class NavigationState;
 class PageState;
 class PepperPluginInstanceImpl;
 class PresentationDispatcher;
 class PushMessagingDispatcher;
 class RenderAccessibilityImpl;
-class RendererCdmManager;
 class RendererMediaPlayerManager;
 class RendererMediaSessionManager;
 class RendererPpapiHost;
-class RendererSurfaceViewManager;
 class RenderFrameObserver;
 class RenderViewImpl;
 class RenderWidget;
 class RenderWidgetFullscreenPepper;
 class ResourceRequestBodyImpl;
 class ScreenOrientationDispatcher;
 class UserMediaClientImpl;
-class WakeLockDispatcher;
 struct CommonNavigationParams;
 struct CustomContextMenuContext;
 struct FileChooserFileInfo;
 struct FileChooserParams;
 struct FrameOwnerProperties;
 struct FrameReplicationState;
 struct NavigationParams;
 struct RequestNavigationParams;
 struct ResourceResponseHead;
 struct ScreenInfo;
@@ skipping 1173 matching lines @@
   bool browser_side_navigation_pending_ = false;
 
   base::WeakPtrFactory<RenderFrameImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_FRAME_IMPL_H_