Add new media request result MEDIA_DEVICE_FAILED_DUE_TO_SHUTDOWN.

chrome/browser/media/media_stream_devices_controller.cc

 // 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.
 
 #include "chrome/browser/media/media_stream_devices_controller.h"
 
 #include "base/metrics/histogram.h"
 #include "base/prefs/scoped_user_pref_update.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
@@ skipping 135 matching lines @@
           content::MEDIA_DEVICE_VIDEO_CAPTURE,
           MediaStreamTypeSettings(MEDIA_ALLOWED,
                                   request.requested_video_device_id)));
     }
   }
 }
 
 MediaStreamDevicesController::~MediaStreamDevicesController() {
   if (!callback_.is_null()) {
     callback_.Run(content::MediaStreamDevices(),
-                  content::MEDIA_DEVICE_INVALID_STATE,
+                  content::MEDIA_DEVICE_FAILED_DUE_TO_SHUTDOWN,
                   scoped_ptr<content::MediaStreamUI>());
   }
 }
 
 // static
 void MediaStreamDevicesController::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* prefs) {
   prefs->RegisterBooleanPref(prefs::kVideoCaptureAllowed,
                              true,
                              user_prefs::PrefRegistrySyncable::UNSYNCABLE_PREF);
@@ skipping 450 matching lines @@
 }
 
 bool MediaStreamDevicesController::IsCaptureDeviceRequestAllowed() const {
 #if defined(OS_ANDROID)
   // Don't approve device requests if the tab was hidden.
   // TODO(qinmin): Add a test for this. http://crbug.com/396869.
   return web_contents_->GetRenderWidgetHostView()->IsShowing();
 #endif
   return true;
 }