Allow layers to signal that additional sequences are needed before surface destruction

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 66db9d90ee38df8e10e604dd75463ab3d6644f97..be48245464faa2aa16532dcb6f9f0f17f908cb50 100644
--- a/cc/surfaces/surface_manager.h
+++ b/cc/surfaces/surface_manager.h
@@ -31,8 +31,7 @@ class CC_SURFACES_EXPORT SurfaceManager {
   void DeregisterSurface(SurfaceId surface_id);
 
   // Destroy the Surface once a set of sequence numbers has been satisfied.
-  void DestroyOnSequence(scoped_ptr<Surface> surface,
-                         const std::set<SurfaceSequence>& dependency_set);
+  void Destroy(scoped_ptr<Surface> surface);
 
   Surface* GetSurfaceForId(SurfaceId surface_id);
 
@@ -46,8 +45,10 @@ class CC_SURFACES_EXPORT SurfaceManager {
 
   void SurfaceModified(SurfaceId surface_id);
 
-  // A frame for a surface satisfies a set of sequence numbers.
-  void DidSatisfySequences(SurfaceId id, std::vector<uint32_t>* sequence);
+  // A frame for a surface satisfies a set of sequence numbers in a particular
+  // id namespace.
+  void DidSatisfySequences(uint32_t id_namespace,
+                           std::vector<uint32_t>* sequence);
 
  private:
   void SearchForSatisfaction();
@@ -59,8 +60,7 @@ class CC_SURFACES_EXPORT SurfaceManager {
 
   // List of surfaces to be destroyed, along with what sequences they're still
   // waiting on.
-  typedef std::list<std::pair<Surface*, std::set<SurfaceSequence>>>
-      SurfaceDestroyList;
+  typedef std::list<Surface*> SurfaceDestroyList;
   SurfaceDestroyList surfaces_to_destroy_;
 
   // Set of SurfaceSequences that have been satisfied by a frame but not yet