ozone: Add OnSwapBuffers hook to SurfaceOzoneEGL

ui/ozone/platform/egltest/ozone_platform_egltest.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/ozone/platform/egltest/ozone_platform_egltest.h"
 
 #include "base/command_line.h"
 #include "base/environment.h"
 #include "base/files/file_path.h"
 #include "base/path_service.h"
@@ skipping 41 matching lines @@
                       LibeglplatformShimLoader* eglplatform_shim)
       : eglplatform_shim_(eglplatform_shim) {
     native_window_ = eglplatform_shim_->ShimGetNativeWindow(window_id);
   }
   virtual ~SurfaceOzoneEgltest() {
     CHECK(eglplatform_shim_->ShimReleaseNativeWindow(native_window_));
   }
 
   virtual intptr_t GetNativeWindow() OVERRIDE { return native_window_; }
 
+  virtual bool OnSwapBuffers() OVERRIDE { return true; }
+
   virtual bool ResizeNativeWindow(const gfx::Size& viewport_size) OVERRIDE {
     return true;
   }
 
   virtual scoped_ptr<gfx::VSyncProvider> CreateVSyncProvider() OVERRIDE {
     return scoped_ptr<gfx::VSyncProvider>();
   }
 
  private:
   LibeglplatformShimLoader* eglplatform_shim_;
@@ skipping 204 matching lines @@
 
 }  // namespace
 
 OzonePlatform* CreateOzonePlatformEgltest() {
   OzonePlatformEgltest* platform = new OzonePlatformEgltest;
   platform->Initialize();
   return platform;
 }
 
 }  // namespace ui