ServiceWorker: Remove unused startMode field from WebEmbeddedWorkerStartData [1/2]

content/renderer/service_worker/embedded_worker_dispatcher.cc

Index: content/renderer/service_worker/embedded_worker_dispatcher.cc
diff --git a/content/renderer/service_worker/embedded_worker_dispatcher.cc b/content/renderer/service_worker/embedded_worker_dispatcher.cc
index ad2287f2c294c529784e16181c37aa54437fb6ac..e62bb2e9ce8302b7e542fb481660e35ebf4f0134 100644
--- a/content/renderer/service_worker/embedded_worker_dispatcher.cc
+++ b/content/renderer/service_worker/embedded_worker_dispatcher.cc
@@ -94,13 +94,6 @@ void EmbeddedWorkerDispatcher::OnStartWorker(
           blink::WebEmbeddedWorkerStartData::WaitForDebugger :
           blink::WebEmbeddedWorkerStartData::DontWaitForDebugger;
 
-  // TODO(michaeln): delete setting this deprecated member once blink
-  // stops reading it.
-  start_data.startMode =
-      params.wait_for_debugger ?
-          blink::WebEmbeddedWorkerStartModePauseOnStart :
-          blink::WebEmbeddedWorkerStartModeDontPauseOnStart;
-
   wrapper->worker()->startWorkerContext(start_data);
   workers_.AddWithID(wrapper.release(), params.embedded_worker_id);
 }