Split extensions::MenuManager instance out from ExtensionService.

chrome/browser/profiles/chrome_browser_main_extra_parts_profiles.cc

Index: chrome/browser/profiles/chrome_browser_main_extra_parts_profiles.cc
diff --git a/chrome/browser/profiles/chrome_browser_main_extra_parts_profiles.cc b/chrome/browser/profiles/chrome_browser_main_extra_parts_profiles.cc
index 14fb231d814d84f615db6a01e362e37ede973913..0344cce62af773e32480e0128581f7c518075a3e 100644
--- a/chrome/browser/profiles/chrome_browser_main_extra_parts_profiles.cc
+++ b/chrome/browser/profiles/chrome_browser_main_extra_parts_profiles.cc
@@ -105,6 +105,7 @@
 #include "chrome/browser/extensions/extension_toolbar_model_factory.h"
 #include "chrome/browser/extensions/extension_web_ui_override_registrar.h"
 #include "chrome/browser/extensions/install_tracker_factory.h"
+#include "chrome/browser/extensions/menu_manager_factory.h"
 #include "chrome/browser/extensions/plugin_manager.h"
 #include "chrome/browser/extensions/token_cache/token_cache_service_factory.h"
 #endif  // defined(ENABLE_EXTENSIONS)
@@ -273,6 +274,7 @@ EnsureBrowserContextKeyedServiceFactoriesBuilt() {
 #if defined(OS_CHROMEOS)
   extensions::MediaPlayerAPI::GetFactoryInstance();
 #endif
+  extensions::MenuManagerFactory::GetInstance();
   extensions::OmniboxAPI::GetFactoryInstance();
 #if defined(ENABLE_PLUGINS)
   extensions::PluginManager::GetFactoryInstance();