Add logging of video device details on device open and close.

content/browser/renderer_host/media/video_capture_manager_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.
 
 // Unit test for VideoCaptureManager.
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/memory/ref_counted.h"
@@ skipping 447 matching lines @@
   vcm_->Unregister();
 }
 
 // Try open a non-existing device.
 TEST_F(VideoCaptureManagerTest, OpenNotExisting) {
   StreamDeviceInfoArray devices;
 
   InSequence s;
   EXPECT_CALL(*listener_, DevicesEnumerated(MEDIA_DEVICE_VIDEO_CAPTURE, _))
       .WillOnce(SaveArg<1>(&devices));
+  EXPECT_CALL(*frame_observer_, OnError(_));
   EXPECT_CALL(*listener_, Opened(MEDIA_DEVICE_VIDEO_CAPTURE, _));

[nisse-chromium (ooo August 14), 2015/12/03 12:37:10]

Not sure from when the Opened event is called, and why it now occurs after the
OnError.

-  EXPECT_CALL(*frame_observer_, OnError(_));
   EXPECT_CALL(*listener_, Closed(MEDIA_DEVICE_VIDEO_CAPTURE, _));
 
   vcm_->EnumerateDevices(MEDIA_DEVICE_VIDEO_CAPTURE);
 
   // Wait to get device callback.
   message_loop_->RunUntilIdle();
 
   MediaStreamType stream_type = MEDIA_DEVICE_VIDEO_CAPTURE;
   std::string device_name("device_doesnt_exist");
   std::string device_id("id_doesnt_exist");
@@ skipping 77 matching lines @@
 
   // Wait to check callbacks before removing the listener.
   message_loop_->RunUntilIdle();
   vcm_->Unregister();
 }
 
 // TODO(mcasas): Add a test to check consolidation of the supported formats
 // provided by the device when http://crbug.com/323913 is closed.
 
 }  // namespace content