Skip drawing unsupported layers in forced software mode

cc/layers/texture_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_TEXTURE_LAYER_IMPL_H_
 #define CC_LAYERS_TEXTURE_LAYER_IMPL_H_
 
 #include <string>
 
 #include "base/callback.h"
 #include "cc/base/cc_export.h"
 #include "cc/layers/layer_impl.h"
 
 namespace cc {
 
 class CC_EXPORT TextureLayerImpl : public LayerImpl {
  public:
   static scoped_ptr<TextureLayerImpl> Create(LayerTreeImpl* tree_impl,
                                              int id,
                                              bool uses_mailbox) {
     return make_scoped_ptr(new TextureLayerImpl(tree_impl, id, uses_mailbox));
   }
   virtual ~TextureLayerImpl();
 
   virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* layer_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 DidLoseOutputSurface() OVERRIDE;
 
   virtual void DumpLayerProperties(std::string* str, int indent) const OVERRIDE;
   virtual void DidBecomeActive() OVERRIDE;
 
   unsigned texture_id() const { return texture_id_; }
@@ skipping 38 matching lines @@
   TextureMailbox texture_mailbox_;
   bool uses_mailbox_;
   bool own_mailbox_;
 
   DISALLOW_COPY_AND_ASSIGN(TextureLayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_TEXTURE_LAYER_IMPL_H_