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

media/capture/video/video_capture_device.h

Index: media/capture/video/video_capture_device.h
diff --git a/media/capture/video/video_capture_device.h b/media/capture/video/video_capture_device.h
index ad0927d8becf7d35c159433ef270dd0f351e78dc..099cf2897a995fdd1e30e6e1a3c2669739b78ff0 100644
--- a/media/capture/video/video_capture_device.h
+++ b/media/capture/video/video_capture_device.h
@@ -26,6 +26,10 @@
 #include "media/base/video_frame.h"
 #include "ui/gfx/gpu_memory_buffer.h"
 
+namespace tracked_objects {
+class Location;
+}  // namespace tracked_objects
+
 namespace media {
 
 class MEDIA_EXPORT VideoCaptureDevice {
@@ -250,7 +254,8 @@ class MEDIA_EXPORT VideoCaptureDevice {
 
     // An error has occurred that cannot be handled and VideoCaptureDevice must
     // be StopAndDeAllocate()-ed. |reason| is a text description of the error.
-    virtual void OnError(const std::string& reason) = 0;
+    virtual void OnError(const tracked_objects::Location& from_here,
+                         const std::string& reason) = 0;
 
     // VideoCaptureDevice requests the |message| to be logged.
     virtual void OnLog(const std::string& message) {}