Clean up unused grit header includes in chrome/

chrome/browser/ui/ash/launcher/browser_shortcut_launcher_item_controller.cc

 // Copyright (c) 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/ui/ash/launcher/browser_shortcut_launcher_item_controller.h"
 
 #include <limits>
 #include <utility>
 #include <vector>
 
@@ skipping 10 matching lines @@
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_commands.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/chrome_pages.h"
 #include "chrome/browser/ui/settings_window_manager.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/web_applications/web_app.h"
 #include "chrome/common/extensions/extension_constants.h"
-#include "chrome/grit/chromium_strings.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/strings/grit/components_strings.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/url_constants.h"
 #include "ui/aura/window.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/events/event.h"
 #include "ui/events/event_constants.h"
 #include "ui/gfx/image/image.h"
@@ skipping 351 matching lines @@
 }
 
 void BrowserShortcutLauncherItemController::OnBrowserClosing(Browser* browser) {
   DCHECK(browser);
   BrowserList::BrowserVector::iterator item = std::find(
       browser_menu_items_.begin(), browser_menu_items_.end(), browser);
   // Clear the entry for the closed browser and leave other indices intact.
   if (item != browser_menu_items_.end())
     *item = nullptr;
 }