[WIP] cc: Plumb SurfaceId from clients

cc/surfaces/surface_factory.h

Index: cc/surfaces/surface_factory.h
diff --git a/cc/surfaces/surface_factory.h b/cc/surfaces/surface_factory.h
index 52f44bbb62b0e915295438df39a3d377f3d1d683..6c6099014125e71f4e2ddda8039ee6d98d9b3828 100644
--- a/cc/surfaces/surface_factory.h
+++ b/cc/surfaces/surface_factory.h
@@ -42,9 +42,13 @@ class CC_SURFACES_EXPORT SurfaceFactory
  public:
   using DrawCallback = base::Callback<void(SurfaceDrawStatus)>;
 
-  SurfaceFactory(SurfaceManager* manager, SurfaceFactoryClient* client);
+  SurfaceFactory(uint32_t client_id,
+                 SurfaceManager* manager,
+                 SurfaceFactoryClient* client);
   ~SurfaceFactory();
 
+  void SetParent(uint32_t client_id);
+
   void Create(const SurfaceId& surface_id);
   void Destroy(const SurfaceId& surface_id);
   void DestroyAll();
@@ -74,6 +78,10 @@ class CC_SURFACES_EXPORT SurfaceFactory
 
   SurfaceManager* manager() { return manager_; }
 
+  uint32_t client_id() const { return client_id_; }
+
+  uint32_t parent_client_id() const { return parent_client_id_; }
+
   // This can be set to false if resources from this SurfaceFactory don't need
   // to have sync points set on them when returned from the Display, for
   // example if the Display shares a context with the creator.
@@ -85,6 +93,8 @@ class CC_SURFACES_EXPORT SurfaceFactory
   void DidDestroySurfaceManager() { manager_ = nullptr; }
 
  private:
+  const uint32_t client_id_;
+  uint32_t parent_client_id_;
   SurfaceManager* manager_;
   SurfaceFactoryClient* client_;
   SurfaceResourceHolder holder_;