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

media/capture/video/linux/v4l2_capture_delegate.h

 // Copyright 2015 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 MEDIA_VIDEO_CAPTURE_LINUX_V4L2_VIDEO_CAPTURE_DELEGATE_H_
 #define MEDIA_VIDEO_CAPTURE_LINUX_V4L2_VIDEO_CAPTURE_DELEGATE_H_
 
 #if defined(OS_OPENBSD)
 #include <sys/videoio.h>
 #else
 #include <linux/videodev2.h>
 #endif
 
 #include "base/files/scoped_file.h"
 #include "base/memory/ref_counted.h"
 #include "media/capture/video/video_capture_device.h"
 
+namespace tracked_objects {
+class Location;
+}  // namespace tracked_objects
+
 namespace media {
 
 // Class doing the actual Linux capture using V4L2 API. V4L2 SPLANE/MPLANE
 // capture specifics are implemented in derived classes. Created and destroyed
 // on the owner's thread, otherwise living and operating on |v4l2_task_runner_|.
 class V4L2CaptureDelegate
     : public base::RefCountedThreadSafe<V4L2CaptureDelegate> {
  public:
   // Creates the appropiate VideoCaptureDelegate according to parameters.
   static scoped_refptr<V4L2CaptureDelegate> CreateV4L2CaptureDelegate(
@@ skipping 102 matching lines @@
 
   // Returns the input |fourcc| as a std::string four char representation.
   static std::string FourccToString(uint32_t fourcc);
   // VIDIOC_QUERYBUFs a buffer from V4L2, creates a BufferTracker for it and
   // enqueues it (VIDIOC_QBUF) back into V4L2.
   bool MapAndQueueBuffer(int index);
   // Fills all common parts of |buffer|. Delegates to FinishFillingV4L2Buffer()
   // for filling in the planar-dependent parts.
   void FillV4L2Buffer(v4l2_buffer* buffer, int i) const;
   void DoCapture();
-  void SetErrorState(const std::string& reason);
+  void SetErrorState(const tracked_objects::Location& from_here,
+                     const std::string& reason);
 
   const v4l2_buf_type capture_type_;
   const scoped_refptr<base::SingleThreadTaskRunner> v4l2_task_runner_;
   const VideoCaptureDevice::Name device_name_;
   const int power_line_frequency_;
 
   // The following members are only known on AllocateAndStart().
   VideoCaptureFormat capture_format_;
   v4l2_format video_fmt_;
   scoped_ptr<VideoCaptureDevice::Client> client_;
   base::ScopedFD device_fd_;
 
   // Vector of BufferTracker to keep track of mmap()ed pointers and their use.
   std::vector<scoped_refptr<BufferTracker>> buffer_tracker_pool_;
 
   bool is_capturing_;
   int timeout_count_;
 
   // Clockwise rotation in degrees. This value should be 0, 90, 180, or 270.
   int rotation_;
 
   DISALLOW_COPY_AND_ASSIGN(V4L2CaptureDelegate);
 };
 
 }  // namespace media
 
 #endif  // MEDIA_VIDEO_CAPTURE_LINUX_V4L2_VIDEO_CAPTURE_DELEGATE_H_