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

ui/ozone/platform/cast/surface_factory_cast.cc

 // Copyright 2015 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/cast/surface_factory_cast.h"
 
 #include <utility>
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
@@ skipping 44 matching lines @@
   }
   bool AreDmaBufFdsValid() const override { return false; }
   size_t GetDmaBufFdCount() const override { return 0; }
   int GetDmaBufFd(size_t plane) const override { return -1; }
   int GetDmaBufPitch(size_t plane) const override { return 0; }
   int GetDmaBufOffset(size_t plane) const override { return 0; }
   uint64_t GetDmaBufModifier(size_t plane) const override { return 0; }
   gfx::BufferFormat GetBufferFormat() const override {
     return gfx::BufferFormat::BGRA_8888;
   }
+  gfx::BufferUsage GetBufferUsage() const override {
+    return gfx::BufferUsage::SCANOUT;
+  }
   gfx::Size GetBufferSize() const override { return gfx::Size(); }
 
   bool ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
                             int plane_z_order,
                             gfx::OverlayTransform plane_transform,
                             const gfx::Rect& display_bounds,
                             const gfx::RectF& crop_rect) override {
     parent_->OnOverlayScheduled(display_bounds);
     return true;
   }
@@ skipping 56 matching lines @@
 
 scoped_refptr<gfx::NativePixmap> SurfaceFactoryCast::CreateNativePixmap(
     gfx::AcceleratedWidget widget,
     gfx::Size size,
     gfx::BufferFormat format,
     gfx::BufferUsage usage) {
   return make_scoped_refptr(new CastPixmap(egl_implementation_.get()));
 }
 
 }  // namespace ui