[chrome/browser/se*-ss*] favor DCHECK_CURRENTLY_ON for better logs

chrome/browser/search/suggestions/image_fetcher_impl.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/search/suggestions/image_fetcher_impl.h"
 
 #include <string>
 
 #include "content/public/browser/browser_thread.h"
 #include "net/base/load_flags.h"
@@ skipping 37 matching lines @@
         net::LOAD_NORMAL);
     pending_net_requests_[image_url].swap(&request);
   } else {
     // Request in progress. Register as an interested callback.
     it->second.callbacks.push_back(callback);
   }
 }
 
 void ImageFetcherImpl::OnFetchComplete(const GURL& image_url,
                                        const SkBitmap* bitmap) {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 
   ImageRequestMap::iterator image_iter = pending_net_requests_.find(image_url);
   DCHECK(image_iter != pending_net_requests_.end());
 
   ImageRequest* request = &image_iter->second;
 
   // Here |bitmap| could be NULL or a pointer to a bitmap which is owned by the
   // BitmapFetcher and which ceases to exist after this function. Pass the
   // un-owned pointer to the registered callbacks.
   for (CallbackVector::iterator callback_iter = request->callbacks.begin();
        callback_iter != request->callbacks.end(); ++callback_iter) {
     callback_iter->Run(request->url, bitmap);
   }
 
   // Inform the ImageFetcherDelegate.
   if (delegate_) {
     delegate_->OnImageFetched(request->url, bitmap);
   }
 
   // Erase the completed ImageRequest.
   pending_net_requests_.erase(image_iter);
 }
 
 }  // namespace suggestions