Move worker code from chrome\worker to content\worker.

chrome/worker/worker_webapplicationcachehost_impl.cc

-// Copyright (c) 2011 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/worker/worker_webapplicationcachehost_impl.h"
-
-#include "chrome/worker/worker_thread.h"
-#include "content/common/appcache/appcache_dispatcher.h"
-
-WorkerWebApplicationCacheHostImpl::WorkerWebApplicationCacheHostImpl(
-    const WorkerAppCacheInitInfo& init_info,
-    WebKit::WebApplicationCacheHostClient* client)
-    : WebApplicationCacheHostImpl(client,
-          WorkerThread::current()->appcache_dispatcher()->backend_proxy()) {
-  if (init_info.is_shared_worker)
-    backend()->SelectCacheForSharedWorker(host_id(),
-                                          init_info.main_resource_appcache_id);
-  else
-    backend()->SelectCacheForWorker(host_id(),
-                                    init_info.parent_process_id,
-                                    init_info.parent_appcache_host_id);
-}
-
-bool WorkerWebApplicationCacheHostImpl::selectCacheWithManifest(
-    const WebKit::WebURL& manifestURL) {
-  return true;
-}