[chrome/browser/ui] favor DCHECK_CURRENTLY_ON for better logs

chrome/browser/ui/webui/chromeos/image_source.cc

 // 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 "chrome/browser/ui/webui/chromeos/image_source.h"
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/location.h"
 #include "base/memory/ref_counted_memory.h"
@@ skipping 10 matching lines @@
 namespace {
 
 const char* kWhitelistedFiles[] = {
   "fcc/label.png"
 };
 
 // Callback for user_manager::UserImageLoader.
 void ImageLoaded(
     const content::URLDataSource::GotDataCallback& got_data_callback,
     const user_manager::UserImage& user_image) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
   if (user_image.has_raw_image())
     got_data_callback.Run(new base::RefCountedBytes(user_image.raw_image()));
   else
     got_data_callback.Run(NULL);
 }
 
 // Looks for the image at |path| under the shared assets directory.
 void StartOnBlockingPool(
     const std::string& path,
@@ skipping 61 matching lines @@
     net::GetWellKnownMimeTypeFromExtension(ext.substr(1), &mime_type);
   return mime_type;
 }
 
 bool ImageSource::IsWhitelisted(const std::string& path) const {
   const char** end = kWhitelistedFiles + arraysize(kWhitelistedFiles);
   return std::find(kWhitelistedFiles, end, path) != end;
 }
 
 }  // namespace chromeos