chromeos: decode video into NV12 format instead of RGBA in vaapi decoder

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 <vector>
 
 #include "base/files/scoped_file.h"
@@ skipping 103 matching lines @@
 
   // NativePixmap:
   void* GetEGLClientBuffer() const override;
   bool AreDmaBufFdsValid() const override;
   size_t GetDmaBufFdCount() const override;
   int GetDmaBufFd(size_t plane) const override;
   int GetDmaBufPitch(size_t plane) const override;
   int GetDmaBufOffset(size_t plane) const override;
   uint64_t GetDmaBufModifier(size_t plane) const override;
   gfx::BufferFormat GetBufferFormat() const override;
+  gfx::BufferUsage GetBufferUsage() const override;
   gfx::Size GetBufferSize() const override;
   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;
   scoped_refptr<ScanoutBuffer> ProcessBuffer(const gfx::Size& size,
                                              uint32_t format);
 
   GbmSurfaceFactory* surface_manager_;
   scoped_refptr<GbmBuffer> buffer_;
 
   // OverlayValidator can request scaling or format conversions as needed for
   // this Pixmap. This holds the processed buffer.
   scoped_refptr<GbmPixmap> processed_pixmap_;
   ProcessingCallback processing_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(GbmPixmap);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_GPU_GBM_BUFFER_H_