Provides more types of errors for output status.

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 <vector>
 
 #include "base/basictypes.h"
@@ skipping 41 matching lines @@
 // it.
 class CHROMEOS_EXPORT OutputConfigurator : public MessageLoop::Dispatcher {
  public:
   class Observer {
    public:
     // Called when the change of the display mode finished.  It will usually
     // start the fading in the displays.
     virtual void OnDisplayModeChanged() {}
 
     // Called when the change of the display mode is issued but failed.
-    virtual void OnDisplayModeChangeFailed() {}
+    // |new_state| is the new state which the system failed to enter.
+    virtual void OnDisplayModeChangeFailed(OutputState new_state) {}

[oshima, 2013/02/14 00:01:50]

failed_new_state would be better.

[Jun Mukai, 2013/02/14 00:54:03]

Done.

   };
 
   OutputConfigurator();
   virtual ~OutputConfigurator();
 
   int connected_output_count() const { return connected_output_count_; }
 
   OutputState output_state() const { return output_state_; }
 
   // Initialization, must be called right after constructor.
@@ skipping 139 matching lines @@
 
   // Indicates the time at which |output_state_| was entered.
   base::TimeTicks last_enter_state_time_;
 
   DISALLOW_COPY_AND_ASSIGN(OutputConfigurator);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DISPLAY_OUTPUT_CONFIGURATOR_H_