Skip drawing unsupported layers in forced software mode

cc/layers/nine_patch_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_NINE_PATCH_LAYER_IMPL_H_
 #define CC_LAYERS_NINE_PATCH_LAYER_IMPL_H_
 
 #include <string>
 
 #include "cc/base/cc_export.h"
@@ skipping 16 matching lines @@
   }
   virtual ~NinePatchLayerImpl();
 
   void SetResourceId(unsigned id) { resource_id_ = id; }
   void SetLayout(gfx::Size image_bounds, gfx::Rect aperture);
 
   virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl)
       OVERRIDE;
   virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE;
 
+  virtual bool WillDraw(DrawMode draw_mode,
+                        ResourceProvider* resource_provider) OVERRIDE;
   virtual void AppendQuads(QuadSink* quad_sink,
                            AppendQuadsData* append_quads_data) OVERRIDE;
   virtual ResourceProvider::ResourceId ContentsResourceId() const OVERRIDE;
   virtual void DumpLayerProperties(std::string* str, int indent) const OVERRIDE;
   virtual void DidLoseOutputSurface() OVERRIDE;
 
   virtual base::DictionaryValue* LayerTreeAsJson() const OVERRIDE;
 
  protected:
   NinePatchLayerImpl(LayerTreeImpl* tree_impl, int id);
 
  private:
   virtual const char* LayerTypeAsString() const OVERRIDE;
 
   // The size of the NinePatch bitmap in pixels.
   gfx::Size image_bounds_;
 
   // The transparent center region that shows the parent layer's contents in
   // image space.
   gfx::Rect image_aperture_;
 
   ResourceProvider::ResourceId resource_id_;
 
   DISALLOW_COPY_AND_ASSIGN(NinePatchLayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_NINE_PATCH_LAYER_IMPL_H_