Skip drawing unsupported layers in forced software mode

cc/layers/video_layer_impl.h

 // Copyright 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 CC_LAYERS_VIDEO_LAYER_IMPL_H_
 #define CC_LAYERS_VIDEO_LAYER_IMPL_H_
 
 #include <vector>
 
 #include "cc/base/cc_export.h"
@@ skipping 12 matching lines @@
  public:
   static scoped_ptr<VideoLayerImpl> Create(LayerTreeImpl* tree_impl,
                                            int id,
                                            VideoFrameProvider* provider);
   virtual ~VideoLayerImpl();
 
   // LayerImpl implementation.
   virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl)
       OVERRIDE;
   virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE;
-  virtual void WillDraw(ResourceProvider* resource_provider) OVERRIDE;
+  virtual bool WillDraw(DrawMode draw_mode,
+                        ResourceProvider* resource_provider) OVERRIDE;
   virtual void AppendQuads(QuadSink* quad_sink,
                            AppendQuadsData* append_quads_data) OVERRIDE;
   virtual void DidDraw(ResourceProvider* resource_provider) OVERRIDE;
   virtual void DidBecomeActive() OVERRIDE;
   virtual void DidLoseOutputSurface() OVERRIDE;
 
   void SetNeedsRedraw();
 
   void SetProviderClientImpl(
       scoped_refptr<VideoFrameProviderClientImpl> provider_client_impl);
@@ skipping 19 matching lines @@
   // ExternalResource (aka TextureMailbox) classes.
   std::vector<unsigned> software_resources_;
   TextureMailbox::ReleaseCallback software_release_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoLayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_VIDEO_LAYER_IMPL_H_