Implement a method to access the non-composited content root layer picture pile.

cc/layer_tree_host.h

Index: cc/layer_tree_host.h
diff --git a/cc/layer_tree_host.h b/cc/layer_tree_host.h
index 95766e342c4fb8b72c3ae916122a6da4e712e756..0557aa19196ccd7fb372a6992a9df8f76d7823cc 100644
--- a/cc/layer_tree_host.h
+++ b/cc/layer_tree_host.h
@@ -45,6 +45,7 @@ class AnimationRegistrar;
 class Layer;
 class LayerTreeHostImpl;
 class LayerTreeHostImplClient;
+class PicturePileImpl;
 class PrioritizedResourceManager;
 class ResourceUpdateQueue;
 class HeadsUpDisplayLayer;
@@ -201,6 +202,9 @@ public:
 
     AnimationRegistrar* animationRegistrar() const { return m_animationRegistrar.get(); }
 
+    Layer* getNonCompositedContentRootLayer() const;
+    scoped_refptr<PicturePileImpl> capturePicturePile(const Layer* layer);

[enne (OOO), 2013/01/02 19:35:22]

I'd really prefer if this API was just capturePicturePile() so that if you
needed to extend it in the future to capture more layers, it would stay the
same, and it would let you hide finding the root layer on the compositor thread.

[Leandro Graciá Gil, 2013/01/03 20:32:10]

Done.

+
 protected:
     LayerTreeHost(LayerTreeHostClient*, const LayerTreeSettings&);
     bool initialize(scoped_ptr<Thread> implThread);