Revert of Revert of ozone: gpu: Add plumbing for platform-specific gpu messaging

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 60 matching lines @@
   // OzonePlatform:
   virtual ui::SurfaceFactoryOzone* GetSurfaceFactoryOzone() OVERRIDE {
     return surface_factory_ozone_.get();
   }
   virtual EventFactoryOzone* GetEventFactoryOzone() OVERRIDE {
     return event_factory_ozone_.get();
   }
   virtual CursorFactoryOzone* GetCursorFactoryOzone() OVERRIDE {
     return cursor_factory_ozone_.get();
   }
+  virtual GpuPlatformSupport* GetGpuPlatformSupport() OVERRIDE {
+    return gpu_platform_support_.get()
+  }
+  virtual GpuPlatformSupportHost* GetGpuPlatformSupportHost() OVERRIDE {
+    return gpu_platform_support_host_.get();
+  }
 #if defined(OS_CHROMEOS)
   virtual scoped_ptr<NativeDisplayDelegate> CreateNativeDisplayDelegate()
       OVERRIDE {
     return scoped_ptr<NativeDisplayDelegate>(new NativeDisplayDelegateOzone());
   }
   virtual scoped_ptr<TouchscreenDeviceManager>
       CreateTouchscreenDeviceManager() OVERRIDE {
     return scoped_ptr<TouchscreenDeviceManager>(
         new TouchscreenDeviceManagerOzone());
   }
 #endif
   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(NULL, NULL, NULL));
 
     device_manager_ = CreateDeviceManager();
     cursor_factory_ozone_.reset(new CursorFactoryOzone());
     event_factory_ozone_.reset(new EventFactoryEvdev(
         NULL, device_manager_.get()));
+
+    gpu_platform_support_host_.reset(CreateStubGpuPlatformSupportHost());
   }
 
   virtual void InitializeGPU() OVERRIDE {
     dri_.reset(new DriWrapper(kDefaultGraphicsCardPath));
     surface_generator_.reset(new GbmSurfaceGenerator(dri_.get()));
     screen_manager_.reset(new ScreenManager(dri_.get(),
                                             surface_generator_.get()));
     surface_factory_ozone_.reset(
         new GbmSurfaceFactory(dri_.get(),
                               surface_generator_->device(),
                               screen_manager_.get()));
+
+    gpu_platform_support_.reset(CreateStubGpuPlatformSupport());
   }
 
  private:
   scoped_ptr<VirtualTerminalManager> vt_manager_;
   scoped_ptr<DriWrapper> dri_;
   scoped_ptr<GbmSurfaceGenerator> surface_generator_;
   scoped_ptr<ScreenManager> screen_manager_;
   scoped_ptr<DeviceManager> device_manager_;
 
   scoped_ptr<GbmSurfaceFactory> surface_factory_ozone_;
   scoped_ptr<CursorFactoryOzone> cursor_factory_ozone_;
   scoped_ptr<EventFactoryEvdev> event_factory_ozone_;
 
+  scoped_ptr<GpuPlatformSupport> gpu_platform_support_;
+  scoped_ptr<GpuPlatformSupportHost> gpu_platform_support_host_;
+
   DISALLOW_COPY_AND_ASSIGN(OzonePlatformGbm);
 };
 
 }  // namespace
 
 OzonePlatform* CreateOzonePlatformGbm() { return new OzonePlatformGbm; }
 
 }  // namespace ui