3D Compositing in <browser>, first draft.

content/browser/renderer_host/render_widget_host_view_aura.h

Index: content/browser/renderer_host/render_widget_host_view_aura.h
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.h b/content/browser/renderer_host/render_widget_host_view_aura.h
index 1af24875bab73dd4344c31c6eb54fde6ab3133dd..7bcd3aa1696cd259b95c2854f1ed92e224bcf046 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.h
+++ b/content/browser/renderer_host/render_widget_host_view_aura.h
@@ -126,7 +126,6 @@ class RenderWidgetHostViewAura
       bool has_horizontal_scrollbar) OVERRIDE;
   virtual void SetScrollOffsetPinning(
       bool is_pinned_to_left, bool is_pinned_to_right) OVERRIDE;
-  virtual gfx::GLSurfaceHandle GetCompositingSurface() OVERRIDE;
   virtual bool LockMouse() OVERRIDE;
   virtual void UnlockMouse() OVERRIDE;
 
@@ -338,6 +337,19 @@ class RenderWidgetHostViewAura
   // This lock is for waiting for a front surface to become available to draw.
   scoped_refptr<aura::CompositorLock> released_front_lock_;
 
+  class CompositingDelegateAura : public CompositingDelegate {
+   public:
+    virtual gfx::GLSurfaceHandle GetCompositingSurface() OVERRIDE; 
+    virtual bool ResizeNeedsNewSurface() OVERRIDE;
+
+   private:
+    friend class RenderWidgetHostViewAura;
+    CompositingDelegateAura(RenderWidgetHostViewAura* view)
+      : view_(view)
+    {}
+    RenderWidgetHostViewAura* view_;
+  };
+
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAura);
 };