Enqueuing new frames in a Surface should cause Displays to reaggregate it

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 40e55f1fc7ee1f522b550cb392fe6e79f7ca2399..363daa554f00e0588ee5fba754cc2dc9ff284fe6 100644
--- a/cc/surfaces/surface_manager.h
+++ b/cc/surfaces/surface_manager.h
@@ -5,8 +5,12 @@
 #ifndef CC_SURFACES_SURFACE_MANAGER_H_
 #define CC_SURFACES_SURFACE_MANAGER_H_
 
+#include <set>

[jamesr, 2014/08/11 22:04:43]

not needed

+
 #include "base/containers/hash_tables.h"
 #include "base/macros.h"
+#include "base/observer_list.h"
+#include "cc/surfaces/surface_damage_observer.h"
 #include "cc/surfaces/surface_id.h"
 #include "cc/surfaces/surfaces_export.h"
 
@@ -24,9 +28,20 @@ class CC_SURFACES_EXPORT SurfaceManager {
 
   Surface* GetSurfaceForId(SurfaceId surface_id);
 
+  void AddObserver(SurfaceDamageObserver* obs) {
+    observer_list_.AddObserver(obs);
+  }
+
+  void RemoveObserver(SurfaceDamageObserver* obs) {
+    observer_list_.RemoveObserver(obs);
+  }
+
+  void SurfaceModified(SurfaceId surface_id);
+
  private:
   typedef base::hash_map<SurfaceId, Surface*> SurfaceMap;
   SurfaceMap surface_map_;
+  ObserverList<SurfaceDamageObserver> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(SurfaceManager);
 };