Add scheme exceptions for isSecureContext

chrome/test/data/extensions/api_test/webrtc_from_web_accessible_resource/iframe.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.
+
+var extensionId = "knldjmfmopnpolahpmmgbagdohdnhkik";

[robwu, 2015/10/14 09:05:35]

extensionId seems unused.

[jww, 2015/10/15 18:19:41]

Done.

+
+var successCallback = chrome.test.succeed;
+var failCallback = chrome.test.fail;
+
+console.log('location.search == ' + document.location.search);
+if (document.location.search === '?fail') {
+  console.log('failing...');

[robwu, 2015/10/14 09:05:35]

Could you reword this to be a more descriptive? (2x)
E.g. "Expecting getUserMedia to fail..."

[jww, 2015/10/15 18:19:41]

Instead, I'll just remove all of these unnecessary console logs that I
accidentally left in from debugging :-)

+  successCallback = chrome.test.fail;

[robwu, 2015/10/14 09:05:35]

Note that the success callback of gUM is invoked with a MediaStream object.

Upon failure you would see "[object MediaStream]" instead of some useful error
message.
Try

successCallback = chrome.test.fail.bind(chrome.test, 'gUM unexpectedly invoked
the success callback');

or

successCallback = function() {
    chrome.test.fail('gUM unexpectedly invoked the success callback');
};

[jww, 2015/10/15 18:19:41]

Done.

+  failCallback = chrome.test.succeed;
+} else {
+  console.log('succeeding...');
+}
+
+navigator.webkitGetUserMedia({
+ audio: true,
+ video: false
+}, successCallback, failCallback);