Update diplays even if configuration failed during startup

ui/display/chromeos/display_configurator.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_CHROMEOS_DISPLAY_CONFIGURATOR_H_
 #define UI_DISPLAY_CHROMEOS_DISPLAY_CONFIGURATOR_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 47 matching lines @@
 
   class Observer {
    public:
     virtual ~Observer() {}
 
     // Called after the display mode has been changed. |display| contains the
     // just-applied configuration. Note that the X server is no longer grabbed
     // when this method is called, so the actual configuration could've changed
     // already.
     virtual void OnDisplayModeChanged(
-        const std::vector<DisplayState>& displays) {}
+        const DisplayStateList& displays) {}
 
-    // Called after a display mode change attempt failed. |failed_new_state| is
-    // the new state which the system failed to enter.
+    // Called after a display mode change attempt failed. |displays| contains
+    // displays that are deteced when faield.

[dnicoara, 2015/02/23 17:08:25]

s/deteced/detected/
s/faield/failed/

[oshima, 2015/02/23 17:58:29]

Done.

+    // |failed_new_state| is the new state which the system failed to enter.
     virtual void OnDisplayModeChangeFailed(
+        const DisplayStateList& displays,
         MultipleDisplayState failed_new_state) {}
   };
 
   // Interface for classes that make decisions about which display state
   // should be used.
   class StateController {
    public:
     virtual ~StateController() {}
 
     // Called when displays are detected.
@@ skipping 340 matching lines @@
 
   // This must be the last variable.
   base::WeakPtrFactory<DisplayConfigurator> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DisplayConfigurator);
 };
 
 }  // namespace ui
 
 #endif  // UI_DISPLAY_CHROMEOS_DISPLAY_CONFIGURATOR_H_