Ozone: Dont hardcode format to YUV when using Overlay Composition.

ui/ozone/platform/drm/gpu/hardware_display_controller.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_GPU_HARDWARE_DISPLAY_CONTROLLER_H_
 #define UI_OZONE_PLATFORM_DRM_GPU_HARDWARE_DISPLAY_CONTROLLER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 #include <xf86drmMode.h>
@@ skipping 110 matching lines @@
   void SchedulePageFlip(const OverlayPlaneList& plane_list,
                         const PageFlipCallback& callback);
 
   // Returns true if the page flip with the |plane_list| would succeed. This
   // doesn't change any state.
   bool TestPageFlip(const OverlayPlaneList& plane_list);
 
   std::vector<uint32_t> GetCompatibleHardwarePlaneIds(
       const OverlayPlane& plane) const;
 
+  bool IsFormatSupported(uint32_t fourcc_format, uint32_t z_order) const;
+
   // Set the hardware cursor to show the contents of |surface|.
   bool SetCursor(const scoped_refptr<ScanoutBuffer>& buffer);
 
   bool UnsetCursor();
 
   // Moves the hardware cursor to |location|.
   bool MoveCursor(const gfx::Point& location);
 
   void AddCrtc(scoped_ptr<CrtcController> controller);
   scoped_ptr<CrtcController> RemoveCrtc(const scoped_refptr<DrmDevice>& drm,
@@ skipping 30 matching lines @@
   gfx::Point origin_;
 
   bool is_disabled_;
 
   DISALLOW_COPY_AND_ASSIGN(HardwareDisplayController);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_GPU_HARDWARE_DISPLAY_CONTROLLER_H_