cleanup: Use EventRouter instead of ExtensionSystem::Get->event_router()

chrome/browser/extensions/api/processes/processes_api.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/processes/processes_api.h"
 
 #include "base/callback.h"
 #include "base/json/json_writer.h"
 #include "base/lazy_instance.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 16 matching lines @@
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/render_widget_host.h"
 #include "content/public/browser/render_widget_host_iterator.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/result_codes.h"
 #include "extensions/browser/event_router.h"
 #include "extensions/browser/extension_function_registry.h"
 #include "extensions/browser/extension_function_util.h"
-#include "extensions/browser/extension_system.h"
 #include "extensions/common/error_utils.h"
 
 namespace extensions {
 
 namespace keys = processes_api_constants;
 namespace errors = processes_api_constants;
 
 namespace {
 
 #if defined(ENABLE_TASK_MANAGER)
@@ skipping 415 matching lines @@
   // Third arg: The exit code for the process.
   args->Append(new base::FundamentalValue(details->exit_code));
 
   DispatchEvent(keys::kOnExited, args.Pass());
 #endif  // defined(ENABLE_TASK_MANAGER)
 }
 
 void ProcessesEventRouter::DispatchEvent(
     const std::string& event_name,
     scoped_ptr<base::ListValue> event_args) {
-  if (extensions::ExtensionSystem::Get(browser_context_)->event_router()) {
+  EventRouter* event_router = EventRouter::Get(browser_context_);
+  if (event_router) {
     scoped_ptr<extensions::Event> event(new extensions::Event(
         event_name, event_args.Pass()));
-    extensions::ExtensionSystem::Get(browser_context_)
-        ->event_router()
-        ->BroadcastEvent(event.Pass());
+    event_router->BroadcastEvent(event.Pass());
   }
 }
 
 bool ProcessesEventRouter::HasEventListeners(const std::string& event_name) {
-  extensions::EventRouter* router =
-      extensions::ExtensionSystem::Get(browser_context_)->event_router();
-  if (router && router->HasEventListener(event_name))
-    return true;
-  return false;
+  EventRouter* event_router = EventRouter::Get(browser_context_);
+  return event_router && event_router->HasEventListener(event_name);
 }
 
 ProcessesAPI::ProcessesAPI(content::BrowserContext* context)
     : browser_context_(context) {
-  ExtensionSystem::Get(browser_context_)->event_router()->RegisterObserver(
-      this, processes_api_constants::kOnUpdated);
-  ExtensionSystem::Get(browser_context_)->event_router()->RegisterObserver(
-      this, processes_api_constants::kOnUpdatedWithMemory);
+  EventRouter* event_router = EventRouter::Get(browser_context_);
+  event_router->RegisterObserver(this, processes_api_constants::kOnUpdated);
+  event_router->RegisterObserver(this,
+                                 processes_api_constants::kOnUpdatedWithMemory);
   ExtensionFunctionRegistry* registry =
       ExtensionFunctionRegistry::GetInstance();
   registry->RegisterFunction<extensions::GetProcessIdForTabFunction>();
   registry->RegisterFunction<extensions::TerminateFunction>();
   registry->RegisterFunction<extensions::GetProcessInfoFunction>();
 }
 
 ProcessesAPI::~ProcessesAPI() {
 }
 
 void ProcessesAPI::Shutdown() {
-  ExtensionSystem::Get(browser_context_)->event_router()->UnregisterObserver(
-      this);
+  EventRouter::Get(browser_context_)->UnregisterObserver(this);
 }
 
 static base::LazyInstance<BrowserContextKeyedAPIFactory<ProcessesAPI> >
     g_factory = LAZY_INSTANCE_INITIALIZER;
 
 // static
 BrowserContextKeyedAPIFactory<ProcessesAPI>*
 ProcessesAPI::GetFactoryInstance() {
   return g_factory.Pointer();
 }
@@ skipping 249 matching lines @@
 
   SetResult(processes);
   SendResponse(true);
 
   // Balance the AddRef in the RunImpl.
   Release();
 #endif  // defined(ENABLE_TASK_MANAGER)
 }
 
 }  // namespace extensions