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

chrome/browser/renderer_host/pepper/pepper_isolated_file_system_message_filter.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.
 
 #include "chrome/browser/renderer_host/pepper/pepper_isolated_file_system_message_filter.h"
 
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/common/chrome_switches.h"
@@ skipping 74 matching lines @@
     ppapi::host::HostMessageContext* context) {
   PPAPI_BEGIN_MESSAGE_MAP(PepperIsolatedFileSystemMessageFilter, msg)
     PPAPI_DISPATCH_HOST_RESOURCE_CALL(
       PpapiHostMsg_IsolatedFileSystem_BrowserOpen,
       OnOpenFileSystem)
   PPAPI_END_MESSAGE_MAP()
   return PP_ERROR_FAILED;
 }
 
 Profile* PepperIsolatedFileSystemMessageFilter::GetProfile() {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   ProfileManager* profile_manager = g_browser_process->profile_manager();
   return profile_manager->GetProfile(profile_directory_);
 }
 
 std::string PepperIsolatedFileSystemMessageFilter::CreateCrxFileSystem(
     Profile* profile) {
 #if defined(ENABLE_EXTENSIONS)
   const extensions::Extension* extension =
       extensions::ExtensionRegistry::Get(profile)->enabled_extensions().GetByID(
           document_url_.host());
@@ skipping 84 matching lines @@
   // Grant full access of isolated filesystem to renderer process.
   content::ChildProcessSecurityPolicy* policy =
       content::ChildProcessSecurityPolicy::GetInstance();
   policy->GrantCreateReadWriteFileSystem(render_process_id_, fsid);
 
   context->reply_msg = PpapiPluginMsg_IsolatedFileSystem_BrowserOpenReply(fsid);
   return PP_OK;
 }
 
 }  // namespace chrome