Add RAPPOR metrics of ServiceWorker.ControlledPage

content/browser/service_worker/service_worker_controllee_request_handler.cc

Index: content/browser/service_worker/service_worker_controllee_request_handler.cc
diff --git a/content/browser/service_worker/service_worker_controllee_request_handler.cc b/content/browser/service_worker/service_worker_controllee_request_handler.cc
index b56dd3f422e26a8157edb232ae3b6d0684ee7e7b..35bca5ed170c751d4304ffdf8945f239ce540b1a 100644
--- a/content/browser/service_worker/service_worker_controllee_request_handler.cc
+++ b/content/browser/service_worker/service_worker_controllee_request_handler.cc
@@ -156,11 +156,11 @@ void ServiceWorkerControlleeRequestHandler::PrepareForMainResource(
   // registration while we're finding an existing registration.
   provider_host_->SetAllowAssociation(false);
 
-  GURL stripped_url = net::SimplifyUrlForRequest(request->url());
-  provider_host_->SetDocumentUrl(stripped_url);
+  stripped_url_ = net::SimplifyUrlForRequest(request->url());
+  provider_host_->SetDocumentUrl(stripped_url_);
   provider_host_->SetTopmostFrameUrl(request->first_party_for_cookies());
   context_->storage()->FindRegistrationForDocument(
-      stripped_url,
+      stripped_url_,
       base::Bind(&self::DidLookupRegistrationForMainResource,
                  weak_factory_.GetWeakPtr()));
 }
@@ -238,7 +238,7 @@ ServiceWorkerControlleeRequestHandler::DidLookupRegistrationForMainResource(
     return;
   }
 
-  ServiceWorkerMetrics::CountControlledPageLoad();
+  ServiceWorkerMetrics::CountControlledPageLoad(stripped_url_);
 
   provider_host_->AssociateRegistration(registration.get());
   job_->ForwardToServiceWorker();
@@ -263,7 +263,7 @@ void ServiceWorkerControlleeRequestHandler::OnVersionStatusChanged(
     return;
   }
 
-  ServiceWorkerMetrics::CountControlledPageLoad();
+  ServiceWorkerMetrics::CountControlledPageLoad(stripped_url_);
 
   provider_host_->AssociateRegistration(registration);
   job_->ForwardToServiceWorker();