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

ui/ozone/platform/drm/gpu/gbm_buffer.cc

 // 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.
 
 #include "ui/ozone/platform/drm/gpu/gbm_buffer.h"
 
 #include <drm.h>
 #include <fcntl.h>
 #include <gbm.h>
 #include <xf86drm.h>
@@ skipping 342 matching lines @@
 }
 
 uint64_t GbmPixmap::GetDmaBufModifier(size_t plane) const {
   return buffer_->GetFormatModifier();
 }
 
 gfx::BufferFormat GbmPixmap::GetBufferFormat() const {
   return ui::GetBufferFormatFromFourCCFormat(buffer_->GetFormat());
 }
 
+gfx::BufferUsage GbmPixmap::GetBufferUsage() const {
+  return ui::GetBufferUsageFromGbmFlags(buffer_->GetFlags());
+}
+
 gfx::Size GbmPixmap::GetBufferSize() const {
   return buffer_->GetSize();
 }
 
 bool GbmPixmap::ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
                                      int plane_z_order,
                                      gfx::OverlayTransform plane_transform,
                                      const gfx::Rect& display_bounds,
                                      const gfx::RectF& crop_rect) {
   DCHECK(buffer_->GetFlags() & GBM_BO_USE_SCANOUT);
@@ skipping 31 matching lines @@
   DCHECK(!processing_callback_.is_null());
   if (!processing_callback_.Run(this, processed_pixmap_)) {
     LOG(ERROR) << "Failed processing NativePixmap";
     return nullptr;
   }
 
   return processed_pixmap_->buffer();
 }
 
 }  // namespace ui