ozone: Add OnSwapBuffers hook to SurfaceOzoneEGL

ui/gl/gl_surface_ozone.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 "ui/gl/gl_surface.h"
 
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/ozone/surface_factory_ozone.h"
@@ skipping 13 matching lines @@
   GLSurfaceOzoneEGL(scoped_ptr<SurfaceOzoneEGL> ozone_surface)
       : NativeViewGLSurfaceEGL(ozone_surface->GetNativeWindow()),
         ozone_surface_(ozone_surface.Pass()) {}
 
   virtual bool Resize(const gfx::Size& size) OVERRIDE {
     if (!ozone_surface_->ResizeNativeWindow(size))
       return false;
 
     return NativeViewGLSurfaceEGL::Resize(size);
   }
+  virtual bool SwapBuffers() OVERRIDE {
+    if (!NativeViewGLSurfaceEGL::SwapBuffers())
+      return false;
+
+    return ozone_surface_->OnSwapBuffers();
+  }
 
  private:
   virtual ~GLSurfaceOzoneEGL() {
     Destroy();  // EGL surface must be destroyed before SurfaceOzone
   }
 
   // The native surface. Deleting this is allowed to free the EGLNativeWindow.
   scoped_ptr<SurfaceOzoneEGL> ozone_surface_;
 
   DISALLOW_COPY_AND_ASSIGN(GLSurfaceOzoneEGL);
@@ skipping 83 matching lines @@
       NOTREACHED();
       return NULL;
   }
 }
 
 EGLNativeDisplayType GetPlatformDefaultEGLNativeDisplay() {
   return SurfaceFactoryOzone::GetInstance()->GetNativeDisplay();
 }
 
 }  // namespace gfx