Use WebKit compositor in ui::Layer

ui/gfx/compositor/compositor.h

Index: ui/gfx/compositor/compositor.h
diff --git a/ui/gfx/compositor/compositor.h b/ui/gfx/compositor/compositor.h
index 1251b6a42108ed2a00474e3e958b400244aedbe0..45e539ace0450eaa3376d99e29b6c46d4e8b2eec 100644
--- a/ui/gfx/compositor/compositor.h
+++ b/ui/gfx/compositor/compositor.h
@@ -107,7 +107,7 @@ class COMPOSITOR_EXPORT Compositor : public base::RefCounted<Compositor> {
   virtual void Blur(const gfx::Rect& bounds) = 0;
 
   // Schedules a redraw of the layer tree associated with this compositor.
-  void ScheduleDraw() {
+  virtual void ScheduleDraw() {

[Ben Goodger (Google), 2011/10/16 22:39:51]

this probably shouldn't be inlined anymore

[piman, 2011/10/19 17:53:23]

Done.

     delegate_->ScheduleDraw();
   }
 
@@ -150,6 +150,8 @@ class COMPOSITOR_EXPORT Compositor : public base::RefCounted<Compositor> {
   virtual void OnNotifyEnd() = 0;
 
   virtual void OnWidgetSizeChanged() = 0;
+  virtual void OnRootLayerChanged();
+  virtual void DrawTree();
 
   CompositorDelegate* delegate() { return delegate_; }