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

chrome/browser/extensions/webstore_installer.cc

 // 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 "chrome/browser/extensions/webstore_installer.h"
 
 #include <set>
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 680 matching lines @@
         FROM_HERE,
         base::TimeDelta::FromSeconds(kTimeRemainingMinutesThreshold),
         this,
         &WebstoreInstaller::UpdateDownloadProgress);
   } else {
     download_progress_timer_.Stop();
   }
 }
 
 void WebstoreInstaller::StartCrxInstaller(const DownloadItem& download) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
   DCHECK(!crx_installer_.get());
 
   // The clock may be backward, e.g. daylight savings time just happenned.
   if (download.GetEndTime() >= download.GetStartTime()) {
     UMA_HISTOGRAM_TIMES("Extensions.WebstoreDownload.FileDownload",
                         download.GetEndTime() - download.GetStartTime());
   }
   ExtensionService* service = ExtensionSystem::Get(profile_)->
       extension_service();
   CHECK(service);
@@ skipping 54 matching lines @@
         1,
         kMaxSizeKb,
         kNumBuckets);
   }
   UMA_HISTOGRAM_BOOLEAN(
       "Extensions.WebstoreDownload.InterruptTotalSizeUnknown",
       total_bytes <= 0);
 }
 
 }  // namespace extensions