Introducing SurfaceReferenceFactory

cc/surfaces/surface_manager.h

Index: cc/surfaces/surface_manager.h
diff --git a/cc/surfaces/surface_manager.h b/cc/surfaces/surface_manager.h
index 5dd3bb2bfb162bc1b61589d27319754afcf10b38..58fed589f897e6866e7a333875138eeb6f3d43e1 100644
--- a/cc/surfaces/surface_manager.h
+++ b/cc/surfaces/surface_manager.h
@@ -17,6 +17,7 @@
 #include "base/macros.h"
 #include "base/observer_list.h"
 #include "base/threading/thread_checker.h"
+#include "cc/surfaces/direct_surface_reference_factory.h"
 #include "cc/surfaces/frame_sink_id.h"
 #include "cc/surfaces/surface_id.h"
 #include "cc/surfaces/surface_observer.h"
@@ -117,6 +118,10 @@ class CC_SURFACES_EXPORT SurfaceManager
   size_t GetSurfaceReferenceCount(const SurfaceId& surface_id) const override;
   size_t GetReferencedSurfaceCount(const SurfaceId& surface_id) const override;
 
+  scoped_refptr<SurfaceReferenceFactory> reference_factory() {
+    return reference_factory_;
+  }
+
  private:
   void RecursivelyAttachBeginFrameSource(const FrameSinkId& frame_sink_id,
                                          BeginFrameSource* source);
@@ -196,6 +201,10 @@ class CC_SURFACES_EXPORT SurfaceManager
   // with this id, it's for bookkeeping purposes only.
   const SurfaceId root_surface_id_;
 
+  // The DirectSurfaceReferenceFactory that uses this manager to create surface
+  // references.
+  scoped_refptr<SurfaceReferenceFactory> reference_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(SurfaceManager);
 };