favor DCHECK_CURRENTLY_ON for better logs in content/browser/[a-d]*

content/browser/device_monitor_udev.cc

 // 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.
 
 // libudev is used for monitoring device changes.
 
 #include "content/browser/device_monitor_udev.h"
 
 #include <string>
 
@@ skipping 27 matching lines @@
   DCHECK(BrowserThread::IsMessageLoopValid(BrowserThread::IO));
   BrowserThread::PostTask(BrowserThread::IO,
       FROM_HERE,
       base::Bind(&DeviceMonitorLinux::Initialize, base::Unretained(this)));
 }
 
 DeviceMonitorLinux::~DeviceMonitorLinux() {
 }
 
 void DeviceMonitorLinux::Initialize() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
   // We want to be notified of IO message loop destruction to delete |udev_|.
   base::MessageLoop::current()->AddDestructionObserver(this);
 
   std::vector<UdevLinux::UdevMonitorFilter> filters;
   for (size_t i = 0; i < arraysize(kSubsystemMap); ++i) {
     filters.push_back(UdevLinux::UdevMonitorFilter(
         kSubsystemMap[i].subsystem, kSubsystemMap[i].devtype));
   }
   udev_.reset(new UdevLinux(filters,
       base::Bind(&DeviceMonitorLinux::OnDevicesChanged,
                  base::Unretained(this))));
 }
 
 void DeviceMonitorLinux::WillDestroyCurrentMessageLoop() {
   // Called on IO thread.
   udev_.reset();
 }
 
 void DeviceMonitorLinux::OnDevicesChanged(udev_device* device) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
   DCHECK(device);
 
   base::SystemMonitor::DeviceType device_type =
       base::SystemMonitor::DEVTYPE_UNKNOWN;
   std::string subsystem(device::udev_device_get_subsystem(device));
   for (size_t i = 0; i < arraysize(kSubsystemMap); ++i) {
     if (subsystem == kSubsystemMap[i].subsystem) {
       device_type = kSubsystemMap[i].device_type;
       break;
     }
   }
   DCHECK_NE(device_type, base::SystemMonitor::DEVTYPE_UNKNOWN);
 
   base::SystemMonitor::Get()->ProcessDevicesChanged(device_type);
 }
 
 }  // namespace content