VaapiVideoAccelerator: make Vaapi accelerator work with ozone

ui/ozone/platform/dri/ozone_platform_gbm.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/dri/ozone_platform_gbm.h"
 
 #include <dlfcn.h>
 #include <gbm.h>
 #include <stdlib.h>
 
@@ skipping 97 matching lines @@
   }
   virtual scoped_ptr<NativeDisplayDelegate> CreateNativeDisplayDelegate()
       override {
     return scoped_ptr<NativeDisplayDelegate>(new NativeDisplayDelegateProxy(
         gpu_platform_support_host_.get(), device_manager_.get()));
   }
   virtual void InitializeUI() override {
     vt_manager_.reset(new VirtualTerminalManager());
     // Needed since the browser process creates the accelerated widgets and that
     // happens through SFO.
-    surface_factory_ozone_.reset(new GbmSurfaceFactory(use_surfaceless_));
+    if (!surface_factory_ozone_)
+      surface_factory_ozone_.reset(new GbmSurfaceFactory(use_surfaceless_));
     device_manager_ = CreateDeviceManager();
     gpu_platform_support_host_.reset(new DriGpuPlatformSupportHost());
     cursor_factory_ozone_.reset(new BitmapCursorFactoryOzone);
     window_manager_.reset(
         new DriWindowManager(gpu_platform_support_host_.get()));
     event_factory_ozone_.reset(new EventFactoryEvdev(window_manager_->cursor(),
                                                      device_manager_.get()));
   }
 
   virtual void InitializeGPU() override {
@@ skipping 44 matching lines @@
 };
 
 }  // namespace
 
 OzonePlatform* CreateOzonePlatformGbm() {
   CommandLine* cmd = CommandLine::ForCurrentProcess();
   return new OzonePlatformGbm(cmd->HasSwitch(switches::kOzoneUseSurfaceless));
 }
 
 }  // namespace ui