Make DeclarativeUserScriptManager non-shared between profiles.

extensions/browser/browser_context_keyed_service_factories.cc

Index: extensions/browser/browser_context_keyed_service_factories.cc
diff --git a/extensions/browser/browser_context_keyed_service_factories.cc b/extensions/browser/browser_context_keyed_service_factories.cc
index ebdf0e4e3a448038b4aea61f7284a00f27e4fa0c..bf98a6b1bb16a88c2525eb5867dee4f2dfa61c48 100644
--- a/extensions/browser/browser_context_keyed_service_factories.cc
+++ b/extensions/browser/browser_context_keyed_service_factories.cc
@@ -24,6 +24,7 @@
 #include "extensions/browser/api/system_info/system_info_api.h"
 #include "extensions/browser/api/usb/usb_event_router.h"
 #include "extensions/browser/api/vpn_provider/vpn_service_factory.h"
+#include "extensions/browser/declarative_user_script_manager_factory.h"
 #include "extensions/browser/extension_message_filter.h"
 #include "extensions/browser/extension_prefs_factory.h"
 #include "extensions/browser/process_manager_factory.h"
@@ -47,6 +48,7 @@ void EnsureBrowserContextKeyedServiceFactoriesBuilt() {
   core_api::UDPSocketEventDispatcher::GetFactoryInstance();
   ExtensionMessageFilter::EnsureShutdownNotifierFactoryBuilt();
   ExtensionPrefsFactory::GetInstance();
+  DeclarativeUserScriptManagerFactory::GetInstance();
   HidDeviceManager::GetFactoryInstance();
   IdleManagerFactory::GetInstance();
   ManagementAPI::GetFactoryInstance();