Don't include the tracing in gpu_memory_buffer.h

media/capture/video/mac/video_capture_device_avfoundation_mac.mm

 // Copyright 2013 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.
 
 #import "media/capture/video/mac/video_capture_device_avfoundation_mac.h"
 
 #import <CoreMedia/CoreMedia.h>
 #import <CoreVideo/CoreVideo.h>
 #include <stddef.h>
 #include <stdint.h>
 
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/mac/foundation_util.h"
 #include "base/mac/mac_util.h"
 #include "base/metrics/histogram_macros.h"
+#include "base/strings/string_util.h"
 #include "media/base/timestamp_constants.h"
 #include "media/base/video_capture_types.h"
 #include "media/capture/video/mac/video_capture_device_mac.h"
 #include "ui/gfx/geometry/size.h"
 
 // Prefer MJPEG if frame width or height is larger than this.
 static const int kMjpegWidthThreshold = 640;
 static const int kMjpegHeightThreshold = 480;
 
 namespace {
@@ skipping 476 matching lines @@
 }
 
 - (void)sendErrorString:(NSString*)error {
   DLOG(ERROR) << [error UTF8String];
   base::AutoLock lock(lock_);
   if (frameReceiver_)
     frameReceiver_->ReceiveError(FROM_HERE, [error UTF8String]);
 }
 
 @end