cc: Give ownership of render passes to the renderer when drawing a frame.

cc/layer_tree_host_impl.h

Index: cc/layer_tree_host_impl.h
diff --git a/cc/layer_tree_host_impl.h b/cc/layer_tree_host_impl.h
index 43163323a28d052c421d25fc8bc4a752e28fcca1..d4aa8f5a110950fbb61769d4188a6b9b2293efc7 100644
--- a/cc/layer_tree_host_impl.h
+++ b/cc/layer_tree_host_impl.h
@@ -158,7 +158,7 @@ public:
     // didDrawAllLayers must also be called, regardless of whether drawLayers is
     // called between the two.
     virtual bool prepareToDraw(FrameData&);
-    virtual void drawLayers(const FrameData&);
+    virtual void drawLayers(FrameData&);
     // Must be called if and only if prepareToDraw was called.
     void didDrawAllLayers(const FrameData&);