[cleanup] Remove LauncherItemChanged() from LauncherItemController

chrome/browser/ui/ash/launcher/app_shortcut_launcher_item_controller.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/ui/ash/launcher/app_shortcut_launcher_item_controller.h"
 
 #include "apps/native_app_window.h"
 #include "ash/wm/window_util.h"
 #include "chrome/browser/extensions/extension_process_manager.h"
 #include "chrome/browser/extensions/extension_system.h"
@@ skipping 127 matching lines @@
       return;
   }
   Activate();
 }
 
 void AppShortcutLauncherItemController::OnRemoved() {
   // AppShortcutLauncherItemController is unowned; delete on removal.
   delete this;
 }
 
-void AppShortcutLauncherItemController::LauncherItemChanged(
-    int model_index,
-    const ash::LauncherItem& old_item) {
-}
-
 ChromeLauncherAppMenuItems
 AppShortcutLauncherItemController::GetApplicationList(int event_flags) {
   ChromeLauncherAppMenuItems items;
   // Add the application name to the menu.
   items.push_back(new ChromeLauncherAppMenuItem(GetTitle(), NULL, false));
 
   std::vector<content::WebContents*> content_list = GetRunningApplications();
 
   for (size_t i = 0; i < content_list.size(); i++) {
     content::WebContents* web_contents = content_list[i];
@@ skipping 157 matching lines @@
 
 bool AppShortcutLauncherItemController::AllowNextLaunchAttempt() {
   if (last_launch_attempt_.is_null() ||
       last_launch_attempt_ + base::TimeDelta::FromMilliseconds(
           kClickSuppressionInMS) < base::Time::Now()) {
     last_launch_attempt_ = base::Time::Now();
     return true;
   }
   return false;
 }