[Ozone] Enables overlay render format setting path and by default use UYVY

ui/ozone/platform/drm/gpu/gbm_buffer.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_GBM_BUFFER_H_
 #define UI_OZONE_PLATFORM_DRM_GPU_GBM_BUFFER_H_
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/gfx/buffer_types.h"
@@ skipping 33 matching lines @@
   GbmPixmap(const scoped_refptr<GbmBuffer>& buffer,
             GbmSurfaceFactory* surface_manager);
   bool Initialize();
   void SetScalingCallback(const ScalingCallback& scaling_callback) override;
   scoped_refptr<NativePixmap> GetScaledPixmap(gfx::Size new_size) override;
 
   // NativePixmap:
   void* GetEGLClientBuffer() override;
   int GetDmaBufFd() override;
   int GetDmaBufPitch() override;
+  gfx::BufferFormat GetPixelFormat() override;

[spang, 2015/10/23 17:00:50]

It's gfx::BufferFormat so GetBufferFormat().

[william.xie1, 2015/10/23 22:52:19]

Done.

   bool ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
                             int plane_z_order,
                             gfx::OverlayTransform plane_transform,
                             const gfx::Rect& display_bounds,
                             const gfx::RectF& crop_rect) override;
   gfx::NativePixmapHandle ExportHandle() override;
 
   scoped_refptr<GbmBuffer> buffer() { return buffer_; }
 
  private:
   ~GbmPixmap() override;
   bool ShouldApplyScaling(const gfx::Rect& display_bounds,
                           const gfx::RectF& crop_rect,
                           gfx::Size* required_size);
 
   scoped_refptr<GbmBuffer> buffer_;
   int dma_buf_ = -1;
 
   GbmSurfaceFactory* surface_manager_;
 
   ScalingCallback scaling_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(GbmPixmap);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_GPU_GBM_BUFFER_H_