Revert of [media] Replace MessageLoopProxy usage with ThreadTaskRunnerHandle

media/video/capture/mac/video_capture_device_mac.mm

 // 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/video/capture/mac/video_capture_device_mac.h"
 
 #include <IOKit/IOCFPlugIn.h>
 #include <IOKit/usb/IOUSBLib.h>
 #include <IOKit/usb/USBSpec.h>
 
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/mac/scoped_ioobject.h"
 #include "base/mac/scoped_ioplugininterface.h"
-#include "base/single_thread_task_runner.h"
+#include "base/message_loop/message_loop_proxy.h"
 #include "base/strings/string_number_conversions.h"
-#include "base/thread_task_runner_handle.h"
 #include "base/time/time.h"
 #import "media/base/mac/avfoundation_glue.h"
 #import "media/video/capture/mac/platform_video_capturing_mac.h"
 #import "media/video/capture/mac/video_capture_device_avfoundation_mac.h"
 #import "media/video/capture/mac/video_capture_device_qtkit_mac.h"
 #include "ui/gfx/geometry/size.h"
 
 @implementation DeviceNameAndTransportType
 
 - (id)initWithName:(NSString*)deviceName transportType:(int32_t)transportType {
@@ skipping 310 matching lines @@
   std::string id_vendor = unique_id_.substr(vid_location, kVidPidSize);
   const size_t pid_location = unique_id_.size() - kVidPidSize;
   std::string id_product = unique_id_.substr(pid_location, kVidPidSize);
 
   return id_vendor + ":" + id_product;
 }
 
 VideoCaptureDeviceMac::VideoCaptureDeviceMac(const Name& device_name)
     : device_name_(device_name),
       tried_to_square_pixels_(false),
-      task_runner_(base::ThreadTaskRunnerHandle::Get()),
+      task_runner_(base::MessageLoopProxy::current()),
       state_(kNotInitialized),
       capture_device_(nil),
       weak_factory_(this) {
   // Avoid reconfiguring AVFoundation or blacklisted devices.
   final_resolution_selected_ = AVFoundationGlue::IsAVFoundationSupported() ||
       device_name.is_blacklisted();
 }
 
 VideoCaptureDeviceMac::~VideoCaptureDeviceMac() {
   DCHECK(task_runner_->BelongsToCurrentThread());
@@ skipping 210 matching lines @@
   if (![capture_device_ setCaptureHeight:capture_format_.frame_size.height()
                                    width:capture_format_.frame_size.width()
                                frameRate:capture_format_.frame_rate]) {
     ReceiveError("Could not configure capture device.");
     return false;
   }
   return true;
 }
 
 } // namespace media