Change MessageService to use ProfileKeyedAPI.

chrome/browser/extensions/api/messaging/message_service.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/extensions/api/messaging/message_service.h"
 
 #include "base/atomic_sequence_num.h"
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/json/json_writer.h"
+#include "base/lazy_instance.h"
 #include "base/stl_util.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/api/messaging/extension_message_port.h"
 #include "chrome/browser/extensions/api/messaging/native_message_port.h"
 #include "chrome/browser/extensions/extension_host.h"
 #include "chrome/browser/extensions/extension_process_manager.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/extensions/extension_tab_util.h"
 #include "chrome/browser/extensions/lazy_background_task_queue.h"
@@ skipping 114 matching lines @@
   DCHECK(GET_OPPOSITE_PORT_ID(port2_id) == port1_id);
   DCHECK(GET_CHANNEL_ID(port1_id) == GET_CHANNEL_ID(port2_id));
   DCHECK(GET_CHANNEL_ID(port1_id) == channel_id);
   DCHECK(GET_CHANNEL_OPENER_ID(channel_id) == port1_id);
   DCHECK(GET_CHANNEL_RECEIVERS_ID(channel_id) == port2_id);
 
   *port1 = port1_id;
   *port2 = port2_id;
 }
 
-MessageService::MessageService(
-    LazyBackgroundTaskQueue* queue)
-    : lazy_background_task_queue_(queue),
+MessageService::MessageService(Profile* profile)
+    : profile_(profile),
       weak_factory_(this) {
   registrar_.Add(this, content::NOTIFICATION_RENDERER_PROCESS_TERMINATED,
                  content::NotificationService::AllBrowserContextsAndSources());
   registrar_.Add(this, content::NOTIFICATION_RENDERER_PROCESS_CLOSED,
                  content::NotificationService::AllBrowserContextsAndSources());
+  lazy_background_task_queue_ =

[Devlin, 2013/04/26 01:21:25]

nit: You could initialize this right below profile_ (and, if you choose not to,
you should still initialize to NULL there).

[Patrick Riordan, 2013/04/26 02:18:45]

Done.

+      ExtensionSystem::Get(profile_)->lazy_background_task_queue();
 }
 
 MessageService::~MessageService() {
   STLDeleteContainerPairSecondPointers(channels_.begin(), channels_.end());
   channels_.clear();
 }
 
+static base::LazyInstance<ProfileKeyedAPIFactory<MessageService> >
+g_factory = LAZY_INSTANCE_INITIALIZER;
+
+// static
+ProfileKeyedAPIFactory<MessageService>* MessageService::GetFactoryInstance() {
+  return &g_factory.Get();
+}
+
 void MessageService::OpenChannelToExtension(
     int source_process_id, int source_routing_id, int receiver_port_id,
     const std::string& source_extension_id,
     const std::string& target_extension_id,
     const GURL& source_url,
     const std::string& channel_name) {
   content::RenderProcessHost* source =
       content::RenderProcessHost::FromID(source_process_id);
   if (!source)
     return;
@@ skipping 356 matching lines @@
     return;
 
   params->source = source;
   params->receiver.reset(new ExtensionMessagePort(host->render_process_host(),
                                                   MSG_ROUTING_CONTROL,
                                                   params->target_extension_id));
   OpenChannelImpl(params.Pass());
 }
 
 }  // namespace extensions