chromeos: Include mode details in OutputSnapshot.

ash/display/display_change_observer_x11.h

 // Copyright (c) 2012 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 ASH_DISPLAY_DISPLAY_CHANGE_OBSERVER_X11_H
 #define ASH_DISPLAY_DISPLAY_CHANGE_OBSERVER_X11_H
 
 #include <X11/Xlib.h>
 
 // Xlib.h defines RootWindow.
@@ skipping 18 matching lines @@
   virtual ~DisplayChangeObserverX11();
 
   // chromeos::OutputConfigurator::StateController overrides:
   virtual chromeos::OutputState GetStateForDisplayIds(
       const std::vector<int64>& outputs) const OVERRIDE;
   virtual bool GetResolutionForDisplayId(int64 display_id,
                                          int* width,
                                          int* height) const OVERRIDE;
 
   // Overriden from chromeos::OutputConfigurator::Observer:
-  virtual void OnDisplayModeChanged() OVERRIDE;
+  virtual void OnDisplayModeChanged(
+      const std::vector<chromeos::OutputConfigurator::OutputSnapshot>& outputs)
+      OVERRIDE;
 
   // Overriden from ShellObserver:
   virtual void OnAppTerminating() OVERRIDE;
 
  private:
   Display* xdisplay_;
 
   ::Window x_root_window_;
 
   int xrandr_event_base_;
 
   DISALLOW_COPY_AND_ASSIGN(DisplayChangeObserverX11);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_AURA_DISPLAY_CHANGE_OBSERVER_X11_H