ui: Revert gfx::BufferUsage::SCANOUT to gfx::BufferUsage::GPU_READ_WRITE change.

content/common/gpu/media/vaapi_drm_picture.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 "base/file_descriptor_posix.h"
 #include "content/common/gpu/media/va_surface.h"
 #include "content/common/gpu/media/vaapi_drm_picture.h"
 #include "content/common/gpu/media/vaapi_wrapper.h"
 #include "third_party/libva/va/drm/va_drm.h"
 #include "third_party/libva/va/va.h"
@@ skipping 79 matching lines @@
 }
 
 scoped_refptr<ui::NativePixmap> VaapiDrmPicture::CreateNativePixmap(
     gfx::Size size) {
   ui::OzonePlatform* platform = ui::OzonePlatform::GetInstance();
   ui::SurfaceFactoryOzone* factory = platform->GetSurfaceFactoryOzone();
 
   // Create a buffer from Ozone.
   return factory->CreateNativePixmap(gfx::kNullAcceleratedWidget, size,
                                      gfx::BufferFormat::BGRX_8888,
-                                     gfx::BufferUsage::GPU_READ_WRITE);
+                                     gfx::BufferUsage::SCANOUT);
 }
 
 bool VaapiDrmPicture::Initialize() {
   // We want to create a VASurface and an EGLImage out of the same
   // memory buffer, so we can output decoded pictures to it using
   // VAAPI and also use it to paint with GL.
   pixmap_ = CreateNativePixmap(size());
   if (!pixmap_) {
     LOG(ERROR) << "Failed creating an Ozone NativePixmap";
     return false;
@@ skipping 80 matching lines @@
 
 scoped_refptr<gl::GLImage> VaapiDrmPicture::GetImageToBind() {
   return gl_image_;
 }
 
 bool VaapiDrmPicture::AllowOverlay() const {
   return true;
 }
 
 }  // namespace