Extract ProcessManager from ExtensionSystem.

chrome/browser/extensions/api/messaging/extension_message_port.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/extension_message_port.h"
 
 #include "chrome/browser/profiles/profile.h"
 #include "content/public/browser/render_process_host.h"
 #include "extensions/browser/extension_host.h"
-#include "extensions/browser/extension_system.h"
 #include "extensions/browser/process_manager.h"
 #include "extensions/common/extension_messages.h"
 #include "extensions/common/manifest_handlers/background_info.h"
 
 namespace extensions {
 
 ExtensionMessagePort::ExtensionMessagePort(content::RenderProcessHost* process,
                                            int routing_id,
                                            const std::string& extension_id)
      : process_(process),
@@ skipping 28 matching lines @@
 
 void ExtensionMessagePort::DispatchOnMessage(const Message& message,
                                              int target_port_id) {
   process_->Send(new ExtensionMsg_DeliverMessage(
       routing_id_, target_port_id, message));
 }
 
 void ExtensionMessagePort::IncrementLazyKeepaliveCount() {
   Profile* profile =
       Profile::FromBrowserContext(process_->GetBrowserContext());
-  extensions::ProcessManager* pm =
-      ExtensionSystem::Get(profile)->process_manager();
+  extensions::ProcessManager* pm = ProcessManager::Get(profile);
   ExtensionHost* host = pm->GetBackgroundHostForExtension(extension_id_);
   if (host && BackgroundInfo::HasLazyBackgroundPage(host->extension()))
     pm->IncrementLazyKeepaliveCount(host->extension());
 
   // Keep track of the background host, so when we decrement, we only do so if
   // the host hasn't reloaded.
   background_host_ptr_ = host;
 }
 
 void ExtensionMessagePort::DecrementLazyKeepaliveCount() {
   Profile* profile =
       Profile::FromBrowserContext(process_->GetBrowserContext());
-  extensions::ProcessManager* pm =
-      ExtensionSystem::Get(profile)->process_manager();
+  extensions::ProcessManager* pm = ProcessManager::Get(profile);
   ExtensionHost* host = pm->GetBackgroundHostForExtension(extension_id_);
   if (host && host == background_host_ptr_)
     pm->DecrementLazyKeepaliveCount(host->extension());
 }
 
 content::RenderProcessHost* ExtensionMessagePort::GetRenderProcessHost() {
   return process_;
 }
 
 }  // namespace extensions