Worker: Add 'name' option to WorkerOptions

This CL adds a new 'name' option to the WorkerOptions dictionary,
but not fully implement it yet and instead shows the console message.
Subsequent CLs will implement it.

Spec: https://html.spec.whatwg.org/multipage/workers.html#workeroptions

Bug: 721219
Change-Id: Ie03ab85a9c3d5636017cc72e3389394b120da508
Reviewed-on: https://chromium-review.googlesource.com/1174581
Commit-Queue: Asami Doi <asamidoi@google.com>
Reviewed-by: Hiroki Nakagawa <nhiroki@chromium.org>
Cr-Commit-Position: refs/heads/master@{#583152}

third_party/blink/renderer/core/workers/dedicated_worker.cc

@@ -74,6 +74,14 @@ DedicatedWorker* DedicatedWorker::Create(ExecutionContext* context,
     return nullptr;
   }
 
+  if (options.name() != "") {
+    // TODO(asamidoi): Implement 'name' option (https://crbug.com/721219)
+    context->AddConsoleMessage(ConsoleMessage::Create(
+        kJSMessageSource, kInfoMessageLevel,
+        "'name' param in WorkerOptions is not implemented yet. See "
+        "https://crbug.com/721219 for details."));
+  }
+
   // TODO(nhiroki): Remove this flag check once module loading for
   // DedicatedWorker is enabled by default (https://crbug.com/680046).
   if (options.type() == "module" &&

third_party/blink/renderer/core/workers/worker_options.idl

@@ -6,8 +6,7 @@
 dictionary WorkerOptions {
     WorkerType type = "classic";
     RequestCredentials credentials = "same-origin";
-    // TODO(nhiroki): Implement "name" option (https://crbug.com/721219)
-    // DOMString name = "";
+    DOMString name = "";
 };
 
 enum WorkerType { "classic", "module" };