Implement ConstraintNotSatisfiedError for getusermedia

content/public/common/media_stream_request.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 CONTENT_PUBLIC_COMMON_MEDIA_STREAM_REQUEST_H_
 #define CONTENT_PUBLIC_COMMON_MEDIA_STREAM_REQUEST_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 57 matching lines @@
 enum MediaStreamRequestResult {
   MEDIA_DEVICE_OK = 0,
   MEDIA_DEVICE_PERMISSION_DENIED,
   MEDIA_DEVICE_PERMISSION_DISMISSED,
   MEDIA_DEVICE_INVALID_STATE,
   MEDIA_DEVICE_NO_HARDWARE,
   MEDIA_DEVICE_INVALID_SECURITY_ORIGIN,
   MEDIA_DEVICE_TAB_CAPTURE_FAILURE,
   MEDIA_DEVICE_SCREEN_CAPTURE_FAILURE,
   MEDIA_DEVICE_CAPTURE_FAILURE,
+  MEDIA_DEVICE_CONSTRAINT_NOT_SATISFIED,

[no longer working on chromium, 2014/07/25 19:27:35]

curiously, could you please explain why MEDIA_DEVICE_CONSTRAINT_NOT_SATISFIED is
chosen? instead of MEDIA_DEVICE_CONSTRAINT_NOT_SUPPORTED ? 

[jiajia.qin, 2014/07/28 05:10:20]

I think it's the same meaning. The final error name is
'ConstraintNotSatisfiedError', so I use MEDIA_DEVICE_CONSTRAINT_NOT_SATISFIED to
specify 'ConstraintNotSatisfiedError'. Do you think
'MEDIA_DEVICE_CONSTRAINT_NOT_SUPPORTED' is better? 

[no longer working on chromium, 2014/07/28 19:55:07]

OK, then keep using MEDIA_DEVICE_CONSTRAINT_NOT_SATISFIED, I was not aware of
ConstraintNotSatisfiedError before.

   MEDIA_DEVICE_TRACK_START_FAILURE,
+  MEDIA_DEVICE_SOURCE_START_FAILURE,
 
   NUM_MEDIA_REQUEST_RESULTS
 };
 
 // Convenience predicates to determine whether the given type represents some
 // audio or some video device.
 CONTENT_EXPORT bool IsAudioInputMediaType(MediaStreamType type);
 CONTENT_EXPORT bool IsVideoMediaType(MediaStreamType type);
 
 // TODO(xians): Change the structs to classes.
@@ skipping 170 matching lines @@
 
 // Callback used return results of media access requests.
 typedef base::Callback<void(
     const MediaStreamDevices& devices,
     content::MediaStreamRequestResult result,
     scoped_ptr<MediaStreamUI> ui)> MediaResponseCallback;
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_MEDIA_STREAM_REQUEST_H_