Allow WebExternalTextureLayerClient to work with mailboxes.

webkit/compositor_bindings/web_compositor_support_impl.h

Index: webkit/compositor_bindings/web_compositor_support_impl.h
diff --git a/webkit/compositor_bindings/web_compositor_support_impl.h b/webkit/compositor_bindings/web_compositor_support_impl.h
index 9688bcfa690415dcfc3d8bd530c3b7cffeee8041..59533c27549b311263f7bf4b50f523187c518887 100644
--- a/webkit/compositor_bindings/web_compositor_support_impl.h
+++ b/webkit/compositor_bindings/web_compositor_support_impl.h
@@ -33,7 +33,8 @@ class WebCompositorSupportImpl : public WebKit::WebCompositorSupport {
   virtual WebKit::WebContentLayer* createContentLayer(
       WebKit::WebContentLayerClient* client);
   virtual WebKit::WebExternalTextureLayer* createExternalTextureLayer(
-      WebKit::WebExternalTextureLayerClient* client);
+      WebKit::WebExternalTextureLayerClient* client,
+      bool mailbox = false);

[piman, 2013/03/14 19:54:58]

nit: no default value (besides, WebCompositorSupport already has it in your
webkit patch).

[alexst (slow to review), 2013/03/14 20:37:06]

Sigh, I thought I removed it already. Done.

   virtual WebKit::WebImageLayer* createImageLayer();
   virtual WebKit::WebSolidColorLayer* createSolidColorLayer();
   virtual WebKit::WebVideoLayer* createVideoLayer(