service worker: Attribute purpose to start worker attempts for UMA

content/browser/service_worker/service_worker_browsertest.cc

Index: content/browser/service_worker/service_worker_browsertest.cc
diff --git a/content/browser/service_worker/service_worker_browsertest.cc b/content/browser/service_worker/service_worker_browsertest.cc
index dda9572e0f216d339fda5c9838c54f601b47f8f7..55bbdad4f3f256b1d9e444e8a0649a9d10d5342d 100644
--- a/content/browser/service_worker/service_worker_browsertest.cc
+++ b/content/browser/service_worker/service_worker_browsertest.cc
@@ -41,6 +41,7 @@
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/referrer.h"
+#include "content/public/common/resource_type.h"
 #include "content/public/common/security_style.h"
 #include "content/public/common/ssl_status.h"
 #include "content/public/common/web_preferences.h"
@@ -601,7 +602,8 @@ class ServiceWorkerVersionBrowserTest : public ServiceWorkerBrowserTest {
     version_->SetStatus(ServiceWorkerVersion::INSTALLING);
     version_->RunAfterStartWorker(
         base::Bind(&self::DispatchInstallEventOnIOThread, this, done, result),
-        CreateReceiver(BrowserThread::UI, done, result));
+        CreateReceiver(BrowserThread::UI, done, result),
+        ServiceWorkerMetrics::EventType::INSTALL);
   }
 
   void DispatchInstallEventOnIOThread(const base::Closure& done,
@@ -632,7 +634,8 @@ class ServiceWorkerVersionBrowserTest : public ServiceWorkerBrowserTest {
     registration_->SetActiveVersion(version_.get());
     version_->RunAfterStartWorker(
         base::Bind(&self::DispatchActivateEventOnIOThread, this, done, result),
-        CreateReceiver(BrowserThread::UI, done, result));
+        CreateReceiver(BrowserThread::UI, done, result),
+        ServiceWorkerMetrics::EventType::ACTIVATE);
   }
 
   void DispatchActivateEventOnIOThread(const base::Closure& done,
@@ -654,7 +657,7 @@ class ServiceWorkerVersionBrowserTest : public ServiceWorkerBrowserTest {
         ServiceWorkerHeaderMap(), Referrer(), false));
     version_->SetStatus(ServiceWorkerVersion::ACTIVATED);
     fetch_dispatcher_.reset(new ServiceWorkerFetchDispatcher(
-        std::move(request), version_.get(),
+        std::move(request), version_.get(), RESOURCE_TYPE_MAIN_FRAME,
         CreatePrepareReceiver(prepare_result),
         CreateResponseReceiver(done, blob_context_.get(), result)));
     fetch_dispatcher_->Run();