native_viewport support for ozone

ui/ozone/platform/drm/host/drm_display_host_manager.h

 // 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.
 
 #ifndef UI_OZONE_PLATFORM_DRM_HOST_DRM_DISPLAY_HOST_MANAGER_H_
 #define UI_OZONE_PLATFORM_DRM_HOST_DRM_DISPLAY_HOST_MANAGER_H_
 
 #include <queue>
 #include <set>
 
@@ skipping 29 matching lines @@
   void RemoveDelegate(DrmNativeDisplayDelegate* delegate);
 
   void TakeDisplayControl(const DisplayControlCallback& callback);
   void RelinquishDisplayControl(const DisplayControlCallback& callback);
   void UpdateDisplays(const GetDisplaysCallback& callback);
 
   // DeviceEventObserver overrides:
   void OnDeviceEvent(const DeviceEvent& event) override;
 
   // Note: IO is performed in OnChannelEstablished.
-  void OnChannelEstablished(int host_id);
-  void OnChannelDestroyed(int host_id);
+  void OnChannelEstablished();
+  void OnChannelDestroyed();
 
   void OnUpdateNativeDisplays(
       const std::vector<DisplaySnapshot_Params>& displays);
   void OnDisplayConfigured(int64_t display_id, bool status);
 
   // Called as a result of finishing to process the display hotplug event. These
   // are responsible for dequing the event and scheduling the next event.
   void OnAddGraphicsDevice(const base::FilePath& path,
                            scoped_ptr<DrmDeviceHandle> handle);
   void OnUpdateGraphicsDevice();
@@ skipping 69 matching lines @@
   base::ScopedFD vgem_card_device_file_;
 
   base::WeakPtrFactory<DrmDisplayHostManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DrmDisplayHostManager);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_HOST_DRM_DISPLAY_HOST_MANAGER_H_