cc: Introduce mechanism to observe CompositorFrames submitted to new surfaceIDs

cc/surfaces/display.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/display.h"
 
 #include <stddef.h>
 
 #include "base/memory/ptr_util.h"
 #include "base/trace_event/trace_event.h"
@@ skipping 394 matching lines @@
   } else if (surface_id == current_surface_id_) {
     if (scheduler_)
       scheduler_->SurfaceDamaged(surface_id);
     *changed = true;
   }
 
   if (surface_id == current_surface_id_)
     UpdateRootSurfaceResourcesLocked();
 }
 
+void Display::OnSurfaceCreated(const SurfaceId& surface_id,
+                               const gfx::Size& frame,
+                               float device_scale_factor) {}
+
 const SurfaceId& Display::CurrentSurfaceId() {
   return current_surface_id_;
 }
 
 void Display::ForceImmediateDrawAndSwapIfPossible() {
   if (scheduler_)
     scheduler_->ForceImmediateSwapIfPossible();
 }
 
 }  // namespace cc