[Not for review] record detailed time breakdown of SW related requests.

content/browser/service_worker/service_worker_request_handler.cc

Index: content/browser/service_worker/service_worker_request_handler.cc
diff --git a/content/browser/service_worker/service_worker_request_handler.cc b/content/browser/service_worker/service_worker_request_handler.cc
index fe367b5cc0012104a7cab38288812cdfe77ca38f..8d1cbd6a3b1fb92d66cee7470bb1f1b2b464c165 100644
--- a/content/browser/service_worker/service_worker_request_handler.cc
+++ b/content/browser/service_worker/service_worker_request_handler.cc
@@ -66,12 +66,13 @@ void FinalizeHandlerInitialization(
     ResourceType resource_type,
     RequestContextType request_context_type,
     RequestContextFrameType frame_type,
-    scoped_refptr<ResourceRequestBodyImpl> body) {
+    scoped_refptr<ResourceRequestBodyImpl> body,
+    base::TimeTicks request_start = base::TimeTicks()) {
   std::unique_ptr<ServiceWorkerRequestHandler> handler(
       provider_host->CreateRequestHandler(
           request_mode, credentials_mode, redirect_mode, resource_type,
           request_context_type, frame_type, blob_storage_context->AsWeakPtr(),
-          body, skip_service_worker));
+          body, skip_service_worker, request_start));
   if (!handler)
     return;
 
@@ -144,7 +145,8 @@ void ServiceWorkerRequestHandler::InitializeHandler(
     ResourceType resource_type,
     RequestContextType request_context_type,
     RequestContextFrameType frame_type,
-    scoped_refptr<ResourceRequestBodyImpl> body) {
+    scoped_refptr<ResourceRequestBodyImpl> body,
+    base::TimeTicks request_start) {
   // Create the handler even for insecure HTTP since it's used in the
   // case of redirect to HTTPS.
   if (!request->url().SchemeIsHTTPOrHTTPS() &&
@@ -162,10 +164,10 @@ void ServiceWorkerRequestHandler::InitializeHandler(
   if (!provider_host || !provider_host->IsContextAlive())
     return;
 
-  FinalizeHandlerInitialization(request, provider_host, blob_storage_context,
-                                skip_service_worker, request_mode,
-                                credentials_mode, redirect_mode, resource_type,
-                                request_context_type, frame_type, body);
+  FinalizeHandlerInitialization(
+      request, provider_host, blob_storage_context, skip_service_worker,
+      request_mode, credentials_mode, redirect_mode, resource_type,
+      request_context_type, frame_type, body, request_start);
 }
 
 ServiceWorkerRequestHandler* ServiceWorkerRequestHandler::GetHandler(