WIP: Propagate SurfaceID up window tree hierarchy

cc/surfaces/surface.h

Index: cc/surfaces/surface.h
diff --git a/cc/surfaces/surface.h b/cc/surfaces/surface.h
index 848fb44867afabd5201235cf5eb0d296b12ab6a0..9036d856b3b010a0f6c36e2c8be8cfa47eca4010 100644
--- a/cc/surfaces/surface.h
+++ b/cc/surfaces/surface.h
@@ -19,6 +19,7 @@
 #include "base/memory/weak_ptr.h"
 #include "cc/output/copy_output_request.h"
 #include "cc/quads/render_pass_id.h"
+#include "cc/surfaces/frame_sink_id.h"
 #include "cc/surfaces/surface_factory.h"
 #include "cc/surfaces/surface_id.h"
 #include "cc/surfaces/surface_sequence.h"
@@ -79,7 +80,7 @@ class CC_SURFACES_EXPORT Surface {
   // remove them from sequences.
   void SatisfyDestructionDependencies(
       std::unordered_set<SurfaceSequence, SurfaceSequenceHash>* sequences,
-      std::unordered_set<uint32_t>* valid_id_namespaces);
+      std::unordered_set<FrameSinkId, FrameSinkIdHash>* valid_id_namespaces);
   size_t GetDestructionDependencyCount() const {
     return destruction_dependencies_.size();
   }