Extend VideoCaptureDevice::Client::OnError() to have a tracked_objects::Location param.

content/browser/media/capture/web_contents_video_capture_device.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.
 //
 // Implementation notes: This needs to work on a variety of hardware
 // configurations where the speed of the CPU and GPU greatly affect overall
 // performance. Spanning several threads, the process of capturing has been
 // split up into four conceptual stages:
 //
 //   1. Reserve Buffer: Before a frame can be captured, a slot in the client's
@@ skipping 744 matching lines @@
 
   DVLOG(1) << "Renewing frame subscription to RWH@" << rwh
            << ", had_subscription=" << had_subscription;
 
   if (!rwh) {
     if (had_subscription && tracker_->web_contents())
       tracker_->web_contents()->DecrementCapturerCount();
     if (IsStarted()) {
       // Tracking of WebContents and/or its main frame has failed before Stop()
       // was called, so report this as an error:
-      oracle_proxy_->ReportError("WebContents and/or main frame are gone.");
+      oracle_proxy_->ReportError(FROM_HERE,
+                                 "WebContents and/or main frame are gone.");
     }
     return;
   }
 
   if (!had_subscription && tracker_->web_contents())
     tracker_->web_contents()->IncrementCapturerCount(ComputeOptimalViewSize());
 
   subscription_.reset(new ContentCaptureSubscription(*rwh, oracle_proxy_,
       base::Bind(&WebContentsCaptureMachine::Capture,
                  weak_ptr_factory_.GetWeakPtr())));
@@ skipping 60 matching lines @@
     scoped_ptr<Client> client) {
   DVLOG(1) << "Allocating " << params.requested_format.frame_size.ToString();
   core_->AllocateAndStart(params, client.Pass());
 }
 
 void WebContentsVideoCaptureDevice::StopAndDeAllocate() {
   core_->StopAndDeAllocate();
 }
 
 }  // namespace content