Skip drawing unsupported layers in forced software mode

cc/layers/tiled_layer_impl.h

 // Copyright 2011 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_TILED_LAYER_IMPL_H_
 #define CC_LAYERS_TILED_LAYER_IMPL_H_
 
 #include <string>
 
 #include "cc/base/cc_export.h"
 #include "cc/layers/layer_impl.h"
 
 namespace cc {
 
 class LayerTilingData;
 class DrawableTile;
 
 class CC_EXPORT TiledLayerImpl : public LayerImpl {
  public:
   static scoped_ptr<TiledLayerImpl> Create(LayerTreeImpl* tree_impl, int id) {
     return make_scoped_ptr(new TiledLayerImpl(tree_impl, id));
   }
   virtual ~TiledLayerImpl();
 
   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;
 
   void set_skips_draw(bool skips_draw) { skips_draw_ = skips_draw; }
   void SetTilingData(const LayerTilingData& tiler);
   void PushTileProperties(int i,
@@ skipping 29 matching lines @@
   bool skips_draw_;
 
   scoped_ptr<LayerTilingData> tiler_;
 
   DISALLOW_COPY_AND_ASSIGN(TiledLayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_TILED_LAYER_IMPL_H_