Implement ConstraintNotSatisfiedError for getusermedia

content/renderer/media/media_stream_video_capturer_source.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 CONTENT_RENDERER_MEDIA_MEDIA_STREAM_VIDEO_CAPTURER_SOURCE_H_
 #define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_VIDEO_CAPTURER_SOURCE_H_
 
 #include "base/callback.h"
 #include "base/gtest_prod_util.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/threading/thread_checker.h"
 #include "content/common/media/video_capture.h"
 #include "content/renderer/media/media_stream_video_source.h"
 
 namespace content {
 
 // VideoCapturerDelegate is a delegate used by MediaStreamVideoCapturerSource
 // for local video capturer. It uses VideoCaptureImplManager to start / stop
 // and receive I420 frames from Chrome's video capture implementation.
 //
 // This is a render thread only object.
 class CONTENT_EXPORT VideoCapturerDelegate
     : public base::RefCountedThreadSafe<VideoCapturerDelegate> {
  public:
-  typedef base::Callback<void(bool running)> RunningCallback;
+  typedef base::Callback<void(MediaStreamRequestResult result)> RunningCallback;
 
   explicit VideoCapturerDelegate(
       const StreamDeviceInfo& device_info);

[miu, 2014/07/30 19:37:23]

Since you're modifying this file, can you put this ctor decl on one line, as it
fits the 80 char limit?

[jiajia.qin, 2014/07/31 13:43:00]

Done.

 
   // Collects the formats that can currently be used.
   // |max_requested_height| and |max_requested_width| is used by Tab and Screen
   // capture to decide what resolution to generate.
   // |callback| is triggered when the formats have been collected.
   virtual void GetCurrentSupportedFormats(
       int max_requested_width,
       int max_requested_height,
       const VideoCaptureDeviceFormatsCB& callback);
 
@@ skipping 74 matching lines @@
  private:
   // The delegate that provides video frames.
   scoped_refptr<VideoCapturerDelegate> delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaStreamVideoCapturerSource);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_VIDEO_CAPTURER_SOURCE_H_