Componentize component_updater: Split content::ResourceThrottle from CUS.

chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc

Index: chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc
diff --git a/chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc b/chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc
index 1c5e69821eee4176e4a3d42ebfc1995a6b655261..4d4db5bedfe05f8285b083d7f484d633a22c96ec 100644
--- a/chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc
+++ b/chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.cc
@@ -12,7 +12,7 @@
 #include "base/logging.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
-#include "chrome/browser/component_updater/component_updater_service.h"
+#include "chrome/browser/component_updater/component_updater_resource_throttle.h"
 #include "chrome/browser/component_updater/pnacl/pnacl_component_installer.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/download/download_request_limiter.h"
@@ -248,7 +248,7 @@ void AppendComponentUpdaterThrottles(
     // We got a component we need to install, so throttle the resource
     // until the component is installed.
     throttles->push_back(
-        cus->GetOnDemandUpdater().GetOnDemandResourceThrottle(request, crx_id));
+        component_updater::GetOnDemandResourceThrottle(cus, crx_id));
   }
 }