Removing dedicated worker-related IPC code (second round).

content/renderer/webworker_base.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 "content/renderer/webworker_base.h"
-
-#include "content/common/child_thread.h"
-#include "content/common/view_messages.h"
-#include "content/common/webmessageportchannel_impl.h"
-#include "content/common/worker_messages.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebURL.h"
-#include "third_party/WebKit/Source/WebKit/chromium/public/WebWorkerClient.h"
-
-using WebKit::WebMessagePortChannel;
-using WebKit::WebMessagePortChannelArray;
-using WebKit::WebString;
-using WebKit::WebURL;
-using WebKit::WebWorkerClient;
-
-WebWorkerBase::WebWorkerBase(
-    ChildThread* child_thread,
-    unsigned long long document_id,
-    int route_id,
-    int render_view_route_id,
-    int parent_appcache_host_id)
-    : route_id_(route_id),
-      render_view_route_id_(render_view_route_id),
-      child_thread_(child_thread),
-      document_id_(document_id),
-      parent_appcache_host_id_(parent_appcache_host_id) {
-  if (route_id_ != MSG_ROUTING_NONE)
-    child_thread_->AddRoute(route_id_, this);
-}
-
-WebWorkerBase::~WebWorkerBase() {
-  Disconnect();
-
-  // Free up any unsent queued messages.
-  for (size_t i = 0; i < queued_messages_.size(); ++i)
-    delete queued_messages_[i];
-}
-
-void WebWorkerBase::Disconnect() {
-  if (route_id_ == MSG_ROUTING_NONE)
-    return;
-
-  // So the messages from WorkerContext (like WorkerContextDestroyed) do not
-  // come after nobody is listening. Since Worker and WorkerContext can
-  // terminate independently, already sent messages may still be in the pipe.
-  child_thread_->RemoveRoute(route_id_);
-
-  route_id_ = MSG_ROUTING_NONE;
-}
-
-void WebWorkerBase::CreateWorkerContext(const GURL& script_url,
-                                        bool is_shared,
-                                        const string16& name,
-                                        const string16& user_agent,
-                                        const string16& source_code,
-                                        int pending_route_id,
-                                        int64 script_resource_appcache_id) {
-  DCHECK(route_id_ == MSG_ROUTING_NONE);
-  ViewHostMsg_CreateWorker_Params params;
-  params.url = script_url;
-  params.is_shared = is_shared;
-  params.name = name;
-  params.document_id = document_id_;
-  params.render_view_route_id = render_view_route_id_;
-  params.route_id = pending_route_id;
-  params.parent_appcache_host_id = parent_appcache_host_id_;
-  params.script_resource_appcache_id = script_resource_appcache_id;
-  IPC::Message* create_message = new ViewHostMsg_CreateWorker(
-      params, &route_id_);
-  child_thread_->Send(create_message);
-  if (route_id_ == MSG_ROUTING_NONE)
-    return;
-
-  child_thread_->AddRoute(route_id_, this);
-
-  // We make sure that the start message is the first, since postMessage or
-  // connect might have already been called.
-  queued_messages_.insert(queued_messages_.begin(),
-      new WorkerMsg_StartWorkerContext(
-          route_id_, script_url, user_agent, source_code));
-}
-
-bool WebWorkerBase::IsStarted() {
-  // Worker is started if we have a route ID and there are no queued messages
-  // (meaning we've sent the WorkerMsg_StartWorkerContext already).
-  return (route_id_ != MSG_ROUTING_NONE && queued_messages_.empty());
-}
-
-bool WebWorkerBase::Send(IPC::Message* message) {
-  // It's possible that messages will be sent before the worker is created, in
-  // which case route_id_ will be none.  Or the worker object can be interacted
-  // with before the browser process told us that it started, in which case we
-  // also want to queue the message.
-  if (!IsStarted()) {
-    queued_messages_.push_back(message);
-    return true;
-  }
-
-  // For now we proxy all messages to the worker process through the browser.
-  // Revisit if we find this slow.
-  // TODO(jabdelmalek): handle sync messages if we need them.
-  IPC::Message* wrapped_msg = new ViewHostMsg_ForwardToWorker(*message);
-  delete message;
-  return child_thread_->Send(wrapped_msg);
-}
-
-void WebWorkerBase::SendQueuedMessages() {
-  DCHECK(queued_messages_.size());
-  std::vector<IPC::Message*> queued_messages = queued_messages_;
-  queued_messages_.clear();
-  for (size_t i = 0; i < queued_messages.size(); ++i) {
-    queued_messages[i]->set_routing_id(route_id_);
-    Send(queued_messages[i]);
-  }
-}