Put chromoting isolate targets under chromoting_swarm_tests=1 GYP variable.

chrome/test/media_router/resources/common.js

+/**
+ * Copyright 2015 The Chromium Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ * @fileoverview Common APIs for presentation integration tests.
+ *
+ */
+
+var startSessionPromise = null;
+var currentSession = null;
+var presentation = window.navigator.presentation;
+
+
+/**
+ * Waits until one device is available then starts session.
+ */
+function startSession() {
+  presentation.onavailablechange = function (e) {
+    console.log('onavailablechange ' + e.available + '\n');
+    if (!e.available) {
+      sendResult(false, 'device unavailable');
+    } else {
+      var presId = Math.random().toFixed(6).substr(2);
+      // Start new session
+      startSessionPromise = presentation.startSession(
+        "http://www.google.com/#__testprovider__=true", presId)
+      sendResult(true, '');
+    }
+  };
+}
+
+/**
+ * Checks if the session has been started successfully.
+ */
+function checkSession() {
+  if (!startSessionPromise) {
+    sendResult(false, 'Failed to start session');
+  } else {
+    startSessionPromise.then(function (currentSession) {
+      if(!currentSession) {
+        sendResult(false, 'Failed to start session');
+      } else {
+        // set the new session
+        currentSession = currentSession;
+        sendResult(true, '');
+      }
+    }).catch(function() {
+      // close old session if exists
+      currentSession && currentSession.close();
+      sendResult(false, 'Failed to start session');
+    })
+  }
+}
+
+
+/**
+ * Stops current session.
+ */
+function stopSession() {
+  if (currentSession) {
+    currentSession.close();
+  }
+  sendResult(true, '');
+}
+
+
+/**
+ * Sends the test result back to browser test.
+ * @param passed true if test passes, otherwise false.
+ * @param errorMessage empty string if test passes, error message if test
+ *                      fails.
+ */
+function sendResult(passed, errorMessage) {
+  window.domAutomationController.send(JSON.stringify({
+    passed: passed,
+    errorMessage: errorMessage
+  }));
+}