Refresh output cache when setting display mode

chromeos/display/output_configurator.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 CHROMEOS_DISPLAY_OUTPUT_CONFIGURATOR_H_
 #define CHROMEOS_DISPLAY_OUTPUT_CONFIGURATOR_H_
 
 #include "base/basictypes.h"
 #include "base/event_types.h"
 #include "base/observer_list.h"
@@ skipping 86 matching lines @@
     unsigned long mm_height;
   };
 
   // Updates |output_count_|, |output_cache_|, |mirror_supported_|,
   // |primary_output_index_|, and |secondary_output_index_| with new data.
   // Returns true if the update succeeded or false if it was skipped since no
   // actual change was observed.
   // Note that |output_state_| is not updated by this call.
   bool TryRecacheOutputs(Display* display, XRRScreenResources* screen);
 
+  // Updates |output_count_|, |output_cache_|, |mirror_supported_|,
+  // |primary_output_index_|, and |secondary_output_index_| with new data.
+  // Note that |output_state_| is not updated by this call.
+  void ForceRecacheOutputs(Display* display, XRRScreenResources* screen);
+
   // Uses the data stored in |output_cache_| and the given |new_state| to
   // configure the Xrandr interface and then updates |output_state_| to reflect
   // the new state.
   void UpdateCacheAndXrandrToState(Display* display,
                                    XRRScreenResources* screen,
                                    Window window,
                                    OutputState new_state);
 
   // A helper to re-cache instance variable state and transition into the
   // appropriate default state for the observed displays.
@@ skipping 59 matching lines @@
   OutputState output_state_;
 
   ObserverList<Observer> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(OutputConfigurator);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DISPLAY_OUTPUT_CONFIGURATOR_H_