Add new media request result MEDIA_DEVICE_FAILED_DUE_TO_SHUTDOWN.

content/browser/renderer_host/media/media_stream_dispatcher_host_unittest.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 <string>
 #include <queue>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/command_line.h"
@@ skipping 437 matching lines @@
 TEST_F(MediaStreamDispatcherHostTest, GenerateStreamWithAudioOnly) {
   StreamOptions options(true, false);
 
   SetupFakeUI(true);
   GenerateStreamAndWaitForResult(kRenderId, kPageRequestId, options);
 
   EXPECT_EQ(host_->audio_devices_.size(), 1u);
   EXPECT_EQ(host_->video_devices_.size(), 0u);
 }
 
+// This test simulates a shutdown scenario: we don't setup a fake UI proxy for
+// MediaStreamManager, so it will create an ordinary one which will not find
+// a RenderFrameHostDelegate. This normally should only be the case at shutdown.
 TEST_F(MediaStreamDispatcherHostTest, GenerateStreamWithNothing) {
   StreamOptions options(false, false);
 
   GenerateStreamAndWaitForFailure(
       kRenderId,
       kPageRequestId,
       options,
-      MEDIA_DEVICE_INVALID_STATE);
+      MEDIA_DEVICE_FAILED_DUE_TO_SHUTDOWN);
 }
 
 TEST_F(MediaStreamDispatcherHostTest, GenerateStreamWithAudioAndVideo) {
   StreamOptions options(true, true);
 
   SetupFakeUI(true);
   GenerateStreamAndWaitForResult(kRenderId, kPageRequestId, options);
 
   EXPECT_EQ(host_->audio_devices_.size(), 1u);
   EXPECT_EQ(host_->video_devices_.size(), 1u);
@@ skipping 436 matching lines @@
 
 TEST_F(MediaStreamDispatcherHostTest, EnumerateVideoDevicesNoAccess) {
   SetupFakeUI(false);
   stream_ui_->SetCameraAccess(false);
   EnumerateDevicesAndWaitForResult(kRenderId, kPageRequestId,
                                    MEDIA_DEVICE_VIDEO_CAPTURE);
   EXPECT_TRUE(DoesNotContainLabels(host_->enumerated_devices_));
 }
 
 };  // namespace content