ozone: Create GbmBuffers from fourcc formats and gbm flags.

ui/ozone/platform/drm/gpu/mock_dumb_buffer_generator.h

 // 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.
 
 #ifndef UI_OZONE_PLATFORM_DRM_GPU_MOCK_DUMB_BUFFER_GENERATOR_H_
 #define UI_OZONE_PLATFORM_DRM_GPU_MOCK_DUMB_BUFFER_GENERATOR_H_
 
 #include "base/macros.h"
 
 #include "ui/ozone/platform/drm/gpu/scanout_buffer.h"
 
 namespace ui {
 
 class MockDumbBufferGenerator : public ScanoutBufferGenerator {
  public:
   MockDumbBufferGenerator();
   ~MockDumbBufferGenerator() override;
 
   // ScanoutBufferGenerator:
   scoped_refptr<ScanoutBuffer> Create(const scoped_refptr<DrmDevice>& drm,
-                                      gfx::BufferFormat format,
+                                      uint32_t format,
                                       const gfx::Size& size) override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockDumbBufferGenerator);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_GPU_MOCK_DUMB_BUFFER_GENERATOR_H_