Unify webexposed/global-interface-listing scripts

third_party/WebKit/LayoutTests/webexposed/resources/global-interface-listing-worker.js

+// Avoid polluting the global scope.
+(function(globalObject) {
+
+  // Save the list of property names of the global object before loading other scripts.
+  var propertyNamesInGlobal = Object.getOwnPropertyNames(globalObject);
+
+  importScripts('../../resources/js-test.js');
+  importScripts('../../resources/global-interface-listing.js');
+
+  if (!self.postMessage) {
+    // Shared worker.  Make postMessage send to the newest client, which in
+    // our tests is the only client.
+
+    // Store messages for sending until we have somewhere to send them.
+    self.postMessage = function(message) {
+      if (typeof self.pendingMessages === "undefined")
+        self.pendingMessages = [];
+      self.pendingMessages.push(message);
+    };
+    self.onconnect = function(event) {
+      self.postMessage = function(message) {
+        event.ports[0].postMessage(message);
+      };
+      // Offload any stored messages now that someone has connected to us.
+      if (typeof self.pendingMessages === "undefined")
+        return;
+      while (self.pendingMessages.length)
+        event.ports[0].postMessage(self.pendingMessages.shift());
+    };
+  }
+
+  globalInterfaceListing(globalObject, propertyNamesInGlobal, debug);
+
+  finishJSTest();
+
+})(this);