Initializing an appcache host in a worker process.

chrome/worker/worker_thread.cc

 // Copyright (c) 2009 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_thread.h"
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/thread_local.h"
+#include "chrome/common/appcache/appcache_dispatcher.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/db_message_filter.h"
 #include "chrome/common/web_database_observer_impl.h"
 #include "chrome/common/worker_messages.h"
 #include "chrome/worker/webworker_stub.h"
 #include "chrome/worker/websharedworker_stub.h"
 #include "chrome/worker/worker_webkitclient_impl.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebDatabase.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebKit.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebRuntimeFeatures.h"
 
 using WebKit::WebRuntimeFeatures;
 
 static base::LazyInstance<base::ThreadLocalPointer<WorkerThread> > lazy_tls(
     base::LINKER_INITIALIZED);
 
 
 WorkerThread::WorkerThread() {
   lazy_tls.Pointer()->Set(this);
   webkit_client_.reset(new WorkerWebKitClientImpl);
   WebKit::initialize(webkit_client_.get());
 
+  appcache_dispatcher_.reset(new AppCacheDispatcher(this));
+
   web_database_observer_impl_.reset(new WebDatabaseObserverImpl(this));
   WebKit::WebDatabase::setObserver(web_database_observer_impl_.get());
+  db_message_filter_ = new DBMessageFilter();
+  channel()->AddFilter(db_message_filter_.get());
 
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
 
   WebKit::WebRuntimeFeatures::enableDatabase(
       !command_line.HasSwitch(switches::kDisableDatabases));
 
-  db_message_filter_ = new DBMessageFilter();
-  channel()->AddFilter(db_message_filter_.get());
+  // TODO(michaeln): Enable once the browser process is ready to receive
+  // the appcache messages.
+  WebKit::WebRuntimeFeatures::enableApplicationCache(false &&
+      !command_line.HasSwitch(switches::kDisableApplicationCache));
 
 #if defined(OS_WIN)
   // We don't yet support notifications on non-Windows, so hide it from pages.
   WebRuntimeFeatures::enableNotifications(
       !command_line.HasSwitch(switches::kDisableDesktopNotifications));
 #endif
 
   WebRuntimeFeatures::enableSockets(
       !command_line.HasSwitch(switches::kDisableWebSockets));
 }
 
 WorkerThread::~WorkerThread() {
   // Shutdown in reverse of the initialization order.
   channel()->RemoveFilter(db_message_filter_.get());
   db_message_filter_ = NULL;
 
   WebKit::shutdown();
   lazy_tls.Pointer()->Set(NULL);
 }
 
 WorkerThread* WorkerThread::current() {
   return lazy_tls.Pointer()->Get();
 }
 
 void WorkerThread::OnControlMessageReceived(const IPC::Message& msg) {
+  // Appcache messages are handled by a delegate.
+  if (appcache_dispatcher_->OnMessageReceived(msg))
+    return;
+
   IPC_BEGIN_MESSAGE_MAP(WorkerThread, msg)
     IPC_MESSAGE_HANDLER(WorkerProcessMsg_CreateWorker, OnCreateWorker)
   IPC_END_MESSAGE_MAP()
 }
 
-void WorkerThread::OnCreateWorker(const GURL& url,
-                                  bool is_shared,
-                                  const string16& name,
-                                  int route_id) {
+void WorkerThread::OnCreateWorker(
+    const WorkerProcessMsg_CreateWorker_Params& params) {
+  WorkerAppCacheInitInfo appcache_init_info(
+      params.is_shared, params.creator_process_id,
+      params.creator_appcache_host_id,
+      params.shared_worker_appcache_id);
+
   // WebWorkerStub and WebSharedWorkerStub own themselves.
-  if (is_shared)
-    new WebSharedWorkerStub(name, route_id);
+  if (params.is_shared)
+    new WebSharedWorkerStub(params.name, params.route_id, appcache_init_info);
   else
-    new WebWorkerStub(url, route_id);
+    new WebWorkerStub(params.url, params.route_id, appcache_init_info);
 }
 
 // The browser process is likely dead. Terminate all workers.
 void WorkerThread::OnChannelError() {
   set_on_channel_error_called(true);
 
   for (WorkerStubsList::iterator it = worker_stubs_.begin();
        it != worker_stubs_.end(); ++it) {
     (*it)->OnChannelError();
   }
 }
 
 void WorkerThread::RemoveWorkerStub(WebWorkerStubBase* stub) {
   worker_stubs_.erase(stub);
 }
 
 void WorkerThread::AddWorkerStub(WebWorkerStubBase* stub) {
   worker_stubs_.insert(stub);
 }