ozone: Consolidate primary plane format.

ui/display/types/display_mode.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_DISPLAY_TYPES_DISPLAY_MODE_H_
 #define UI_DISPLAY_TYPES_DISPLAY_MODE_H_
 
 #include <memory>
 #include <string>
 
 #include "base/macros.h"
 #include "ui/display/types/display_types_export.h"
+#include "ui/gfx/buffer_types.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace ui {
 
 // This class represents the basic information for a native mode. Platforms will
 // extend this class to add platform specific information about the mode.
 class DISPLAY_TYPES_EXPORT DisplayMode {
  public:
   DisplayMode(const gfx::Size& size, bool interlaced, float refresh_rate);
   virtual ~DisplayMode();
   virtual std::unique_ptr<DisplayMode> Clone() const;
 
   const gfx::Size& size() const { return size_; }
   bool is_interlaced() const { return is_interlaced_; }
   float refresh_rate() const { return refresh_rate_; }
 
   virtual std::string ToString() const;
 
+  // Return the buffer format to be used for the primary
+  // plane buffer.
+  static gfx::BufferFormat PrimaryFormat();

[dnicoara, 2016/08/05 13:59:45]

This would better fit onto the DisplaySnapshot since this would be a display
related configuration.

[Daniele Castagna, 2016/08/06 04:48:07]

Done.

+
  private:
   gfx::Size size_;
   bool is_interlaced_;
   float refresh_rate_;
 
   DISALLOW_COPY_AND_ASSIGN(DisplayMode);
 };
 
 }  // namespace ui
 
 #endif  // UI_DISPLAY_TYPES_DISPLAY_MODE_H_