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

media/capture/video/linux/video_capture_device_linux.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 "media/capture/video/linux/video_capture_device_linux.h"
 
 #if defined(OS_OPENBSD)
 #include <sys/videoio.h>
 #else
 #include <linux/videodev2.h>
@@ skipping 83 matching lines @@
   DCHECK(!capture_impl_);
   if (v4l2_thread_.IsRunning())
     return;  // Wrong state.
   v4l2_thread_.Start();
 
   const int line_frequency =
       TranslatePowerLineFrequencyToV4L2(GetPowerLineFrequency(params));
   capture_impl_ = V4L2CaptureDelegate::CreateV4L2CaptureDelegate(
       device_name_, v4l2_thread_.task_runner(), line_frequency);
   if (!capture_impl_) {
-    client->OnError("Failed to create VideoCaptureDelegate");
+    client->OnError(FROM_HERE, "Failed to create VideoCaptureDelegate");
     return;
   }
   v4l2_thread_.message_loop()->PostTask(
       FROM_HERE,
       base::Bind(&V4L2CaptureDelegate::AllocateAndStart, capture_impl_,
                  params.requested_format.frame_size.width(),
                  params.requested_format.frame_size.height(),
                  params.requested_format.frame_rate, base::Passed(&client)));
 }
 
@@ skipping 24 matching lines @@
       return V4L2_CID_POWER_LINE_FREQUENCY_50HZ;
     case media::PowerLineFrequency::FREQUENCY_60HZ:
       return V4L2_CID_POWER_LINE_FREQUENCY_60HZ;
     default:
       // If we have no idea of the frequency, at least try and set it to AUTO.
       return V4L2_CID_POWER_LINE_FREQUENCY_AUTO;
   }
 }
 
 }  // namespace media