Migrate the Android compositor to cc::Layer classes.

content/public/browser/android/compositor.h

Index: content/public/browser/android/compositor.h
diff --git a/content/public/browser/android/compositor.h b/content/public/browser/android/compositor.h
index 998c22d66f5a7856e259bfe915f9e833a0cfbba2..bca7fe797a3cfb558eececb3152e814bdfa5d1e2 100644
--- a/content/public/browser/android/compositor.h
+++ b/content/public/browser/android/compositor.h
@@ -13,12 +13,12 @@
 
 #include "third_party/WebKit/Source/Platform/chromium/public/WebGraphicsContext3D.h"
 
-namespace gfx {
-class JavaBitmap;
+namespace cc {
+class Layer;
 }
 
-namespace WebKit {
-class WebLayer;
+namespace gfx {
+class JavaBitmap;
 }
 
 namespace content {
@@ -58,7 +58,7 @@ class CONTENT_EXPORT Compositor {
   static Compositor* Create(Client* client);
 
   // Attaches the layer tree.
-  virtual void SetRootLayer(WebKit::WebLayer* root) = 0;
+  virtual void SetRootLayer(scoped_refptr<cc::Layer> root) = 0;
 
   // Set the output surface bounds.
   virtual void SetWindowBounds(const gfx::Size& size) = 0;