Update Surface ID Terminology

cc/surfaces/surface_damage_observer.h

Index: cc/surfaces/surface_damage_observer.h
diff --git a/cc/surfaces/surface_damage_observer.h b/cc/surfaces/surface_damage_observer.h
index 62ee0126e66ec8496adea3bb987bce7b49597661..b266e6e508edbe0c4320e4aba9b247c095adf2cd 100644
--- a/cc/surfaces/surface_damage_observer.h
+++ b/cc/surfaces/surface_damage_observer.h
@@ -5,15 +5,15 @@
 #ifndef CC_SURFACES_SURFACE_DAMAGE_OBSERVER_H_
 #define CC_SURFACES_SURFACE_DAMAGE_OBSERVER_H_
 
-#include "cc/surfaces/surface_id.h"
-
 namespace cc {
 
+class SurfaceId;
+
 class SurfaceDamageObserver {
  public:
   // Runs when a Surface is damaged. *changed should be set to true if this
   // causes a Display to be damaged.
-  virtual void OnSurfaceDamaged(SurfaceId surface_id, bool* changed) = 0;
+  virtual void OnSurfaceDamaged(const SurfaceId& surface_id, bool* changed) = 0;
 };
 
 }  // namespace cc