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

ui/ozone/platform/drm/gpu/gbm_surfaceless.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_SURFACELESS_H_
 #define UI_OZONE_PLATFORM_DRM_GPU_GBM_SURFACELESS_H_
 
 #include <vector>
 
+#include "base/memory/weak_ptr.h"
+#include "ui/gfx/buffer_types.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/ozone/platform/drm/gpu/overlay_plane.h"
 #include "ui/ozone/public/surface_ozone_egl.h"
 
 namespace gfx {
 class Size;
 }
 
 namespace ui {
 
 class DrmWindowProxy;
 class GbmSurfaceFactory;
+struct OverlayCheck_Params;
 
 // In surfaceless mode drawing and displaying happens directly through
 // NativePixmap buffers. CC would call into SurfaceFactoryOzone to allocate the
 // buffers and then call ScheduleOverlayPlane(..) to schedule the buffer for
 // presentation.
 class GbmSurfaceless : public SurfaceOzoneEGL {
  public:
   GbmSurfaceless(scoped_ptr<DrmWindowProxy> window,
                  GbmSurfaceFactory* surface_manager);
   ~GbmSurfaceless() override;
 
   void QueueOverlayPlane(const OverlayPlane& plane);
 
+  // Returns optimal buffer configuration which can be supported by the display
+  // on which |window_| is shown.
+  void EvaluateBufferConfiguration(const gfx::Rect& display_rect,
+                                   const gfx::RectF& crop_rect,
+                                   const gfx::Size& buffer_size,
+                                   gfx::BufferFormat buffer_format,
+                                   gfx::OverlayTransform transform,
+                                   uint32_t z_order,
+                                   gfx::Size* target_size,
+                                   gfx::BufferFormat* target_format);
+
+  void GetOverlayBufferConfigurations(
+      const std::vector<OverlayCheck_Params>& params);
   // SurfaceOzoneEGL:
   intptr_t GetNativeWindow() override;
   bool ResizeNativeWindow(const gfx::Size& viewport_size) override;
   bool OnSwapBuffers() override;
   void OnSwapBuffersAsync(const SwapCompletionCallback& callback) override;
   scoped_ptr<gfx::VSyncProvider> CreateVSyncProvider() override;
   bool IsUniversalDisplayLinkDevice() override;
 
  protected:
   scoped_ptr<DrmWindowProxy> window_;
 
   GbmSurfaceFactory* surface_manager_;
 
   std::vector<OverlayPlane> planes_;
+  std::vector<OverlayCheck_Params> overlay_params_;
+
+  base::WeakPtrFactory<GbmSurfaceless> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GbmSurfaceless);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRM_GPU_GBM_SURFACELESS_H_