WebView: Cleanup class/struct forward declarations

android_webview/browser/hardware_renderer.h

 // Copyright 2014 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 ANDROID_WEBVIEW_BROWSER_HARDWARE_RENDERER_H_
 #define ANDROID_WEBVIEW_BROWSER_HARDWARE_RENDERER_H_
 
 #include <memory>
 
 #include "android_webview/browser/child_frame.h"
 #include "android_webview/browser/compositor_id.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "cc/surfaces/frame_sink_id.h"
 #include "cc/surfaces/surface_factory_client.h"
 #include "cc/surfaces/surface_id.h"
 
 struct AwDrawGLInfo;
 
 namespace cc {
-class Display;
 class SurfaceFactory;
 class SurfaceIdAllocator;
-class SurfaceManager;
 }
 
 namespace android_webview {
 
 class ChildFrame;
 class RenderThreadManager;
 class SurfacesInstance;
 
 class HardwareRenderer : public cc::SurfaceFactoryClient {
  public:
@@ skipping 57 matching lines @@
   // dropped.
   uint32_t last_committed_compositor_frame_sink_id_;
   uint32_t last_submitted_compositor_frame_sink_id_;
 
   DISALLOW_COPY_AND_ASSIGN(HardwareRenderer);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_HARDWARE_RENDERER_H_