ozone: Directly provide size of active mode from HardwareDisplayController

ui/ozone/platform/dri/hardware_display_controller.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_DRI_HARDWARE_DISPLAY_CONTROLLER_H_
 #define UI_OZONE_PLATFORM_DRI_HARDWARE_DISPLAY_CONTROLLER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 #include <xf86drmMode.h>
@@ skipping 149 matching lines @@
   bool UnsetCursor();
 
   // Moves the hardware cursor to |location|.
   bool MoveCursor(const gfx::Point& location);
 
   void AddCrtc(scoped_ptr<CrtcState> state);
   scoped_ptr<CrtcState> RemoveCrtc(uint32_t crtc);
   bool HasCrtc(uint32_t crtc) const;
   bool IsMirrored() const;
   bool IsDisabled() const;
+  gfx::Size GetModeSize() const;
 
   gfx::Point origin() const { return origin_; }
   void set_origin(const gfx::Point& origin) { origin_ = origin; }
 
   const drmModeModeInfo& get_mode() const { return mode_; };
   uint64_t get_time_of_last_flip() const {
     return time_of_last_flip_;
   };
 
  private:
@@ skipping 29 matching lines @@
   //  2) decremented when the page flip callback is triggered,
   //  3) reset to 0 when a drmModeSetCrtc is called (via the DriWrapper).
   uint32_t pending_page_flips_;
 
   DISALLOW_COPY_AND_ASSIGN(HardwareDisplayController);
 };
 
 }  // namespace ui
 
 #endif  // UI_OZONE_PLATFORM_DRI_HARDWARE_DISPLAY_CONTROLLER_H_