zero copy - NOT FOR REVIEW

ui/compositor/layer.h

Index: ui/compositor/layer.h
diff --git a/ui/compositor/layer.h b/ui/compositor/layer.h
index c62550e08c76ca727c52875abe219b2d9c4e4bb8..8f0c6331cd7fb41cf85b5038acaedf19b259db1e 100644
--- a/ui/compositor/layer.h
+++ b/ui/compositor/layer.h
@@ -17,6 +17,7 @@
 #include "cc/base/scoped_ptr_vector.h"
 #include "cc/layers/content_layer_client.h"
 #include "cc/layers/layer_client.h"
+#include "cc/layers/picture_layer.h"
 #include "cc/layers/texture_layer_client.h"
 #include "cc/resources/texture_mailbox.h"
 #include "third_party/skia/include/core/SkColor.h"
@@ -457,7 +458,7 @@ class COMPOSITOR_EXPORT Layer
 
   // Ownership of the layer is held through one of the strongly typed layer
   // pointers, depending on which sort of layer this is.
-  scoped_refptr<cc::ContentLayer> content_layer_;
+  scoped_refptr<cc::Layer> content_layer_;

[reveman, 2014/03/07 19:35:13]

Let's move this and layer.cc changes into a separate patch that adds a
--ui-enable-impl-side-painting flag and land that first.

I think the code should be consistent with how we handle this in:
src/webkit/renderer/compositor_bindings/web_content_layer_impl.cc

   scoped_refptr<cc::TextureLayer> texture_layer_;
   scoped_refptr<cc::SolidColorLayer> solid_color_layer_;
   scoped_refptr<cc::DelegatedRendererLayer> delegated_renderer_layer_;