Skip drawing unsupported layers in forced software mode

cc/layers/delegated_renderer_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_DELEGATED_RENDERER_LAYER_IMPL_H_
 #define CC_LAYERS_DELEGATED_RENDERER_LAYER_IMPL_H_
 
 #include "base/hash_tables.h"
 #include "base/memory/scoped_ptr.h"
 #include "cc/base/cc_export.h"
@@ skipping 14 matching lines @@
 
   // LayerImpl overrides.
   virtual scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl)
       OVERRIDE;
   virtual bool HasDelegatedContent() const OVERRIDE;
   virtual bool HasContributingDelegatedRenderPasses() const OVERRIDE;
   virtual RenderPass::Id FirstContributingRenderPassId() const OVERRIDE;
   virtual RenderPass::Id NextContributingRenderPassId(
       RenderPass::Id previous) const OVERRIDE;
   virtual void DidLoseOutputSurface() OVERRIDE;
+  virtual bool WillDraw(DrawMode draw_mode,
+                        ResourceProvider* resource_provider) OVERRIDE;
   virtual void AppendQuads(QuadSink* quad_sink,
                            AppendQuadsData* append_quads_data) OVERRIDE;
   virtual void PushPropertiesTo(LayerImpl* layer) OVERRIDE;
 
   void AppendContributingRenderPasses(RenderPassSink* render_pass_sink);
 
   void SetFrameData(scoped_ptr<DelegatedFrameData> frame_data,
                     gfx::RectF damage_in_frame,
                     TransferableResourceArray* resources_for_ack);
 
@@ skipping 46 matching lines @@
   gfx::Size display_size_;
   int child_id_;
   bool own_child_id_;
 
   DISALLOW_COPY_AND_ASSIGN(DelegatedRendererLayerImpl);
 };
 
 }  // namespace cc
 
 #endif  // CC_LAYERS_DELEGATED_RENDERER_LAYER_IMPL_H_