Clarify resolution change behaviors of video capture devices

content/browser/renderer_host/media/video_capture_host.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 "content/browser/renderer_host/media/video_capture_host.h"
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/browser/browser_main_loop.h"
 #include "content/browser/renderer_host/media/media_stream_manager.h"
@@ skipping 200 matching lines @@
   return handled;
 }
 
 void VideoCaptureHost::OnStartCapture(int device_id,
                                       media::VideoCaptureSessionId session_id,
                                       const media::VideoCaptureParams& params) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   DVLOG(1) << "VideoCaptureHost::OnStartCapture:"
            << " session_id=" << session_id
            << ", device_id=" << device_id
            << ", format=" << params.requested_format.frame_size.ToString()

[mcasas, 2014/09/08 09:09:53]

Please use params.requested_format.ToString().

[Alpha Left Google, 2014/09/09 01:04:22]

Done.

            << "@" << params.requested_format.frame_rate
-           << " (" << (params.allow_resolution_change ? "variable" : "constant")
+           << " (" << (params.resolution_change_policy ==
+                       media::RESOLUTION_POLICY_DYNAMIC_WITHIN_LIMIT ?

[perkj_chrome, 2014/09/07 14:07:09]

indent 4 more.

[Alpha Left Google, 2014/09/09 01:04:22]

Done.

+                       "variable" : "constant")
            << ")";
   VideoCaptureControllerID controller_id(device_id);
   if (entries_.find(controller_id) != entries_.end()) {
     Send(new VideoCaptureMsg_StateChanged(device_id,
                                           VIDEO_CAPTURE_STATE_ERROR));
     return;
   }
 
   entries_[controller_id] = base::WeakPtr<VideoCaptureController>();
   media_stream_manager_->video_capture_manager()->StartCaptureForClient(
@@ skipping 117 matching lines @@
     return;
 
   if (it->second) {
     media_stream_manager_->video_capture_manager()->StopCaptureForClient(
         it->second.get(), controller_id, this, on_error);
   }
   entries_.erase(it);
 }
 
 }  // namespace content