launcher: Remove old files and update DEPS whitelist.

chrome/browser/ui/views/ash/launcher/launcher_app_tab_helper.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/views/ash/launcher/launcher_app_tab_helper.h"
-
-#include "chrome/browser/extensions/extension_service.h"
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/ui/tab_contents/tab_contents.h"
-#include "chrome/common/extensions/extension.h"
-#include "content/public/browser/web_contents.h"
-
-namespace {
-
-const extensions::Extension* GetExtensionForTab(Profile* profile,
-                                                TabContents* tab) {
-  ExtensionService* extension_service = profile->GetExtensionService();
-  if (!extension_service)
-    return NULL;
-  return extension_service->GetInstalledApp(tab->web_contents()->GetURL());
-}
-
-const extensions::Extension* GetExtensionByID(Profile* profile,
-                                              const std::string& id) {
-  ExtensionService* service = profile->GetExtensionService();
-  if (!service)
-    return NULL;
-  return service->extensions()->GetByID(id);
-}
-
-}  // namespace
-
-LauncherAppTabHelper::LauncherAppTabHelper(Profile* profile)
-    : profile_(profile) {
-}
-
-LauncherAppTabHelper::~LauncherAppTabHelper() {
-}
-
-std::string LauncherAppTabHelper::GetAppID(TabContents* tab) {
-  const extensions::Extension* extension = GetExtensionForTab(profile_, tab);
-  return extension ? extension->id() : std::string();
-}
-
-bool LauncherAppTabHelper::IsValidID(const std::string& id) {
-  return GetExtensionByID(profile_, id) != NULL;
-}