(Try 2) InstantExtended: remove dead code related to the non-cacheable NTP.

chrome/browser/task_manager/task_manager_util.h

 // 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.
 
 #ifndef CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_UTIL_H_
 #define CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_UTIL_H_
 
 #include "base/basictypes.h"
 #include "base/strings/string16.h"
 
 class Profile;
 
 namespace content {
 class WebContents;
 }
 
 namespace task_manager {
 
 namespace util {
 
 // Returns the appropriate message prefix ID for tabs and extensions,
 // reflecting whether they are apps or in incognito mode.
 int GetMessagePrefixID(bool is_app,
                        bool is_extension,
                        bool is_incognito,
                        bool is_prerender,
-                       bool is_instant_overlay,
                        bool is_background);
 
 // Returns the name of profle from InfoCache.
 base::string16 GetProfileNameFromInfoCache(Profile* profile);
 
 // Returns the title from web contents.
 base::string16 GetTitleFromWebContents(content::WebContents* web_contents);
 
 }  // namespace util
 
 }  // namespace task_manager
 
 #endif  // CHROME_BROWSER_TASK_MANAGER_TASK_MANAGER_UTIL_H_