ozone: Create GbmBuffers from fourcc formats and gbm flags.

ui/ozone/platform/drm/gpu/drm_overlay_validator.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/drm/gpu/drm_overlay_validator.h"
 
 #include <drm_fourcc.h>
 
 #include "ui/gfx/geometry/size_conversions.h"
 #include "ui/ozone/platform/drm/common/drm_util.h"
@@ skipping 25 matching lines @@
     ScanoutBufferGenerator* buffer_generator,
     std::vector<scoped_refptr<ScanoutBuffer>>* reusable_buffers) {
   // Check if we can re-use existing buffers.
   for (const auto& buffer : *reusable_buffers) {
     if (buffer->GetFramebufferPixelFormat() == format &&
         buffer->GetSize() == size) {
       return buffer;
     }
   }
 
-  gfx::BufferFormat buffer_format = GetBufferFormatFromFourCCFormat(format);
   scoped_refptr<ScanoutBuffer> scanout_buffer =
-      buffer_generator->Create(drm_device, buffer_format, size);
+      buffer_generator->Create(drm_device, format, size);
   reusable_buffers->push_back(scanout_buffer);
 
   return scanout_buffer;
 }
 
 gfx::Size GetScaledSize(const gfx::Size original_size,
                         const gfx::Rect display_rect,
                         const gfx::RectF crop_rect) {
   if (!crop_rect.IsEmpty()) {
     return gfx::ToCeiledSize(
@@ skipping 214 matching lines @@
 
     // Make sure we dont hold reference to buffer when caching this plane list.
     plane.buffer = nullptr;
   }
 
   DCHECK(hints_plane_list.size() == overlay_hints.size());
   overlay_hints_cache_.Put(hints_plane_list, overlay_hints);
 }
 
 }  // namespace ui