Implement Chrome Extension TabCapture API.

chrome/test/data/extensions/api_test/tab_capture/experimental/test.js

+// Copyright (c) 2012 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.
+
+// TODO(justinlin): Test to make sure state transitions are correct.
+
+var tabCapture = chrome.experimental.tabCapture;
+var tabMediaRequestCallback = function(stream) {
+  chrome.test.assertFalse(null == stream);
+  chrome.test.succeed();
+};
+
+function runTests(tests) {
+  chrome.test.getConfig(function(config) {
+    operatingSystem = config.osName;
+    chrome.test.runTests(tests);
+  });
+}
+
+chrome.test.runTests([
+  function getTabMedia() {
+    tabCapture.getTabMedia(null, null,
+        chrome.test.callbackPass(tabMediaRequestCallback));
+  }
+]);