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

content/browser/cocoa/system_hotkey_helper_mac.mm

 // Copyright 2014 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 "content/browser/cocoa/system_hotkey_helper_mac.h"
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/mac/foundation_util.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 27 matching lines @@
       base::TimeDelta::FromSeconds(kLoadHotkeysDelaySeconds));
 }
 
 SystemHotkeyHelperMac::SystemHotkeyHelperMac() : map_(new SystemHotkeyMap) {
 }
 
 SystemHotkeyHelperMac::~SystemHotkeyHelperMac() {
 }
 
 void SystemHotkeyHelperMac::LoadSystemHotkeys() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
+  DCHECK_CURRENTLY_ON(BrowserThread::FILE);
 
   std::string library_path(base::mac::GetUserLibraryPath().value());
   NSString* expanded_file_path =
       [NSString stringWithFormat:@"%s%@",
                                  library_path.c_str(),
                                  kSystemHotkeyPlistExtension];
 
   // Loads the file into memory.
   NSData* data = [NSData dataWithContentsOfFile:expanded_file_path];
   // Intentionally create the object with +1 retain count, as FileDidLoad
   // will destroy the object.
   NSDictionary* dictionary = [SystemHotkeyMap::DictionaryFromData(data) retain];
 
   BrowserThread::PostTask(BrowserThread::UI,
                           FROM_HERE,
                           base::Bind(&SystemHotkeyHelperMac::FileDidLoad,
                                      base::Unretained(this),
                                      dictionary));
 }
 
 void SystemHotkeyHelperMac::FileDidLoad(NSDictionary* dictionary) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
   bool success = map()->ParseDictionary(dictionary);
   UMA_HISTOGRAM_BOOLEAN("OSX.SystemHotkeyMap.LoadSuccess", success);
   [dictionary release];
 }
 
 }  // namespace content