cc: Introduce mechanism to observe CompositorFrames submitted to new surfaceIDs

cc/surfaces/surface_manager.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/surfaces/surface_manager.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/logging.h"
@@ skipping 327 matching lines @@
   DCHECK(thread_checker_.CalledOnValidThread());
   SurfaceMap::iterator it = surface_map_.find(surface_id);
   if (it == surface_map_.end())
     return NULL;
   return it->second;
 }
 
 bool SurfaceManager::SurfaceModified(const SurfaceId& surface_id) {
   CHECK(thread_checker_.CalledOnValidThread());
   bool changed = false;
-  FOR_EACH_OBSERVER(SurfaceDamageObserver, observer_list_,
+  FOR_EACH_OBSERVER(SurfaceObserver, observer_list_,
                     OnSurfaceDamaged(surface_id, &changed));
   return changed;
 }
 
+void SurfaceManager::SurfaceCreated(const SurfaceId& surface_id,
+                                    const gfx::Size& frame_size,
+                                    float device_scale_factor) {
+  CHECK(thread_checker_.CalledOnValidThread());
+  FOR_EACH_OBSERVER(
+      SurfaceObserver, observer_list_,
+      OnSurfaceCreated(surface_id, frame_size, device_scale_factor));
+}
+
 }  // namespace cc