ozone: Port NativeViewportOzone on top of PlatformWindow

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 264 matching lines @@
   }
   virtual scoped_ptr<TouchscreenDeviceManager>
       CreateTouchscreenDeviceManager() OVERRIDE {
     return scoped_ptr<TouchscreenDeviceManager>(
         new TouchscreenDeviceManagerOzone());
   }
 #endif
 
   virtual void InitializeUI() OVERRIDE {
     device_manager_ = CreateDeviceManager();
-    surface_factory_ozone_.reset(new SurfaceFactoryEgltest(&eglplatform_shim_));
+    if (!surface_factory_ozone_)
+      surface_factory_ozone_.reset(
+          new SurfaceFactoryEgltest(&eglplatform_shim_));
     event_factory_ozone_.reset(
         new EventFactoryEvdev(NULL, device_manager_.get()));
     cursor_factory_ozone_.reset(new CursorFactoryOzone());
     gpu_platform_support_host_.reset(CreateStubGpuPlatformSupportHost());
   }
 
   virtual void InitializeGPU() OVERRIDE {
-    surface_factory_ozone_.reset(new SurfaceFactoryEgltest(&eglplatform_shim_));
+    if (!surface_factory_ozone_)
+      surface_factory_ozone_.reset(
+          new SurfaceFactoryEgltest(&eglplatform_shim_));
     gpu_platform_support_.reset(CreateStubGpuPlatformSupport());
   }
 
  private:
   LibeglplatformShimLoader eglplatform_shim_;
   scoped_ptr<DeviceManager> device_manager_;
   scoped_ptr<SurfaceFactoryEgltest> surface_factory_ozone_;
   scoped_ptr<EventFactoryEvdev> event_factory_ozone_;
   scoped_ptr<CursorFactoryOzone> cursor_factory_ozone_;
   scoped_ptr<GpuPlatformSupport> gpu_platform_support_;
   scoped_ptr<GpuPlatformSupportHost> gpu_platform_support_host_;
 
   bool shim_initialized_;
 
   DISALLOW_COPY_AND_ASSIGN(OzonePlatformEgltest);
 };
 
 }  // namespace
 
 OzonePlatform* CreateOzonePlatformEgltest() {
   OzonePlatformEgltest* platform = new OzonePlatformEgltest;
   platform->Initialize();
   return platform;
 }
 
 }  // namespace ui