Move Extension Location and Type enums to Manifest, and move InstallWarning to its own file.

chrome/browser/ui/webui/ntp/app_launcher_handler.cc

Index: chrome/browser/ui/webui/ntp/app_launcher_handler.cc
diff --git a/chrome/browser/ui/webui/ntp/app_launcher_handler.cc b/chrome/browser/ui/webui/ntp/app_launcher_handler.cc
index 2fa65686335884122dfa8bc0a9b6aa0577bc0d68..b88a40da4bc40fd12a86b2f943d5405a338e41d4 100644
--- a/chrome/browser/ui/webui/ntp/app_launcher_handler.cc
+++ b/chrome/browser/ui/webui/ntp/app_launcher_handler.cc
@@ -134,7 +134,7 @@ void AppLauncherHandler::CreateAppInfo(
       prefs->GetLaunchType(extension,
                            ExtensionPrefs::LAUNCH_DEFAULT));
   value->SetBoolean("is_component",
-      extension->location() == Extension::COMPONENT);
+                    extension->location() == extensions::Manifest::COMPONENT);
   value->SetBoolean("is_webstore",
       extension->id() == extension_misc::kWebStoreAppId);