Split ExtensionSystem interface from ExtensionSystemImpl implementation, part 1.

chrome/browser/chromeos/extensions/input_method_event_router.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 "input_method_event_router.h"
 
 #include <algorithm>
 
 #include "base/json/json_writer.h"
 #include "base/values.h"
 #include "chrome/browser/chromeos/extensions/input_method_api.h"
 #include "chrome/browser/extensions/event_names.h"
-#include "chrome/browser/extensions/extension_system.h"
 #include "content/public/browser/browser_context.h"
 #include "extensions/browser/event_router.h"
+#include "extensions/browser/extension_system.h"
 
 namespace chromeos {
 
 ExtensionInputMethodEventRouter::ExtensionInputMethodEventRouter(
     content::BrowserContext* context)
     : context_(context) {
   input_method::InputMethodManager::Get()->AddObserver(this);
 }
 
 ExtensionInputMethodEventRouter::~ExtensionInputMethodEventRouter() {
   input_method::InputMethodManager::Get()->RemoveObserver(this);
 }
 
 void ExtensionInputMethodEventRouter::InputMethodChanged(
     input_method::InputMethodManager *manager,
     bool show_message) {
   extensions::EventRouter *router =
-      extensions::ExtensionSystem::GetForBrowserContext(context_)->
-          event_router();
+      extensions::ExtensionSystem::Get(context_)->event_router();
 
   if (!router->HasEventListener(extensions::event_names::kOnInputMethodChanged))
     return;
 
   scoped_ptr<base::ListValue> args(new base::ListValue());
   base::StringValue *input_method_name = new base::StringValue(
       extensions::InputMethodAPI::GetInputMethodForXkb(
           manager->GetCurrentInputMethod().id()));
   args->Append(input_method_name);
 
   // The router will only send the event to extensions that are listening.
   scoped_ptr<extensions::Event> event(new extensions::Event(
       extensions::event_names::kOnInputMethodChanged, args.Pass()));
   event->restrict_to_browser_context = context_;
   router->BroadcastEvent(event.Pass());
 }
 
 }  // namespace chromeos