Add use counters for lots of DOM APIs.

third_party/WebKit/Source/modules/serviceworkers/ServiceWorkerGlobalScope.idl

Index: third_party/WebKit/Source/modules/serviceworkers/ServiceWorkerGlobalScope.idl
diff --git a/third_party/WebKit/Source/modules/serviceworkers/ServiceWorkerGlobalScope.idl b/third_party/WebKit/Source/modules/serviceworkers/ServiceWorkerGlobalScope.idl
index ca8fef4b69f0e78160cf0a32306d41e05ccb2138..4525c7ff77a2fe3e765340caa9566c8ca200c378 100644
--- a/third_party/WebKit/Source/modules/serviceworkers/ServiceWorkerGlobalScope.idl
+++ b/third_party/WebKit/Source/modules/serviceworkers/ServiceWorkerGlobalScope.idl
@@ -35,16 +35,16 @@
     Global=(Worker,ServiceWorker),
 ] interface ServiceWorkerGlobalScope : WorkerGlobalScope {
 
-  readonly attribute Clients clients;
-  readonly attribute ServiceWorkerRegistration registration;
+  [Measure] readonly attribute Clients clients;
+  [Measure] readonly attribute ServiceWorkerRegistration registration;
 
-  [CallWith=ScriptState, RaisesException] Promise<Response> fetch(RequestInfo input, optional Dictionary init);
+  [Measure, CallWith=ScriptState, RaisesException] Promise<Response> fetch(RequestInfo input, optional Dictionary init);
 
-  [CallWith=ScriptState] Promise<void> skipWaiting();
+  [Measure, CallWith=ScriptState] Promise<void> skipWaiting();
 
-  attribute EventHandler onactivate;
-  attribute EventHandler onfetch;
-  attribute EventHandler oninstall;
-  attribute EventHandler onmessage;
-  [OriginTrialEnabled=ForeignFetch] attribute EventHandler onforeignfetch;
+  [Measure] attribute EventHandler onactivate;
+  [Measure] attribute EventHandler onfetch;
+  [Measure] attribute EventHandler oninstall;
+  [Measure] attribute EventHandler onmessage;
+  [Measure, OriginTrialEnabled=ForeignFetch] attribute EventHandler onforeignfetch;
 };