Ozone: Dont hardcode format to YUV when using Overlay Composition.

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

 // 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.
 
 #ifndef UI_OZONE_PLATFORM_DRM_GPU_GBM_BUFFER_H_
 #define UI_OZONE_PLATFORM_DRM_GPU_GBM_BUFFER_H_
 
 #include "base/files/scoped_file.h"
 #include "base/macros.h"
 #include "ui/gfx/buffer_types.h"
@@ skipping 52 matching lines @@
                             int plane_z_order,
                             gfx::OverlayTransform plane_transform,
                             const gfx::Rect& display_bounds,
                             const gfx::RectF& crop_rect) override;
   gfx::NativePixmapHandle ExportHandle() override;
 
   scoped_refptr<GbmBuffer> buffer() { return buffer_; }
 
  private:
   ~GbmPixmap() override;
-  bool ShouldApplyProcessing(const gfx::Rect& display_bounds,
-                             const gfx::RectF& crop_rect,
-                             gfx::Size* target_size,
-                             gfx::BufferFormat* target_format);
+  scoped_refptr<ScanoutBuffer> ProcessBuffer(const gfx::Size& size,
+                                             uint32_t format);
 
   scoped_refptr<GbmBuffer> buffer_;
   base::ScopedFD dma_buf_;
   int dma_buf_pitch_ = -1;
 
   GbmSurfaceFactory* surface_manager_;
 
+  // OverlayValidator can request scaling or format conversions as needed for
+  // this Pixmap. This holds the processed buffer.
+  scoped_refptr<GbmPixmap> processed_pixmap_;
   ProcessingCallback processing_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(GbmPixmap);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_GPU_GBM_BUFFER_H_