content: Cleanup class/struct forward declarations

content/renderer/pepper/pepper_plugin_instance_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_PEPPER_PEPPER_PLUGIN_INSTANCE_IMPL_H_
 #define CONTENT_RENDERER_PEPPER_PEPPER_PLUGIN_INSTANCE_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 49 matching lines @@
 #include "third_party/WebKit/public/platform/WebURLResponse.h"
 #include "third_party/WebKit/public/web/WebAssociatedURLLoaderClient.h"
 #include "third_party/WebKit/public/web/WebPlugin.h"
 #include "third_party/WebKit/public/web/WebUserGestureToken.h"
 #include "ui/base/ime/text_input_type.h"
 #include "ui/gfx/geometry/rect.h"
 #include "url/gurl.h"
 #include "v8/include/v8.h"
 
 struct PP_Point;
-struct _NPP;
 
 class SkBitmap;
-class TransportDIB;
 
 namespace blink {
 class WebInputEvent;
 class WebLayer;
 class WebMouseEvent;
 class WebPluginContainer;
-class WebURLLoader;
 class WebURLResponse;
 struct WebCompositionUnderline;
 struct WebCursorInfo;
 struct WebURLError;
 struct WebPrintParams;
 }  // namespace blink
 
 namespace cc {
 class TextureLayer;
 }
@@ skipping 16 matching lines @@
 class FullscreenContainer;
 class MessageChannel;
 class PepperAudioController;
 class PepperCompositorHost;
 class PepperGraphics2DHost;
 class PluginInstanceThrottlerImpl;
 class PluginModule;
 class PluginObject;
 class PPB_Graphics3D_Impl;
 class PPB_ImageData_Impl;
-class PPB_URLLoader_Impl;
 class RenderFrameImpl;
-class RenderViewImpl;
 
 // Represents one time a plugin appears on one web page.
 //
 // Note: to get from a PP_Instance to a PepperPluginInstance*, use the
 // ResourceTracker.
 class CONTENT_EXPORT PepperPluginInstanceImpl
     : public base::RefCounted<PepperPluginInstanceImpl>,
       public NON_EXPORTED_BASE(PepperPluginInstance),
       public ppapi::PPB_Instance_Shared,
       public NON_EXPORTED_BASE(cc::TextureLayerClient),
@@ skipping 856 matching lines @@
   // view change events.
   base::WeakPtrFactory<PepperPluginInstanceImpl> view_change_weak_ptr_factory_;
   base::WeakPtrFactory<PepperPluginInstanceImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperPluginInstanceImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_PLUGIN_INSTANCE_IMPL_H_