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

ui/ozone/platform/drm/common/drm_util.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_COMMON_DRM_UTIL_H_
 #define UI_OZONE_PLATFORM_DRM_COMMON_DRM_UTIL_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 59 matching lines @@
     const gfx::Point& origin);
 
 std::vector<DisplaySnapshot_Params> CreateParamsFromSnapshot(
     const MovableDisplaySnapshots& displays);
 
 int GetFourCCFormatFromBufferFormat(gfx::BufferFormat format);
 gfx::BufferFormat GetBufferFormatFromFourCCFormat(int format);
 
 int GetFourCCFormatForOpaqueFramebuffer(gfx::BufferFormat format);
 
+uint32_t GetGbmFlagsFromBufferUsage(gfx::BufferUsage usage);
+gfx::BufferUsage GetBufferUsageFromGbmFlags(int flags);
+
 gfx::Size GetMaximumCursorSize(int fd);
 
 DisplayMode_Params GetDisplayModeParams(const display::DisplayMode& mode);
 
 std::unique_ptr<display::DisplayMode> CreateDisplayModeFromParams(
     const DisplayMode_Params& pmode);
 
 bool MatchMode(const display::DisplayMode& display_mode,
                const drmModeModeInfo& m);
 
 const gfx::Size ModeSize(const drmModeModeInfo& mode);
 
 float ModeRefreshRate(const drmModeModeInfo& mode);
 
 bool ModeIsInterlaced(const drmModeModeInfo& mode);
 
 MovableDisplaySnapshots CreateMovableDisplaySnapshotsFromParams(
     const std::vector<DisplaySnapshot_Params>& displays);
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_COMMON_DRM_UTIL_H_