WebRtcBrowserTest prep-CL for IndexedDB cloning of RTCCertificate.

chrome/test/data/webrtc/peerconnection.js

 /**
  * Copyright 2014 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.
  */
 
 /**
  * The one and only peer connection in this page.
  * @private
  */
@@ skipping 10 matching lines @@
  * @private
  */
 var gHasSeenCryptoInSdp = 'no-crypto-seen';
 
 // Public interface to tests. These are expected to be called with
 // ExecuteJavascript invocations from the browser tests and will return answers
 // through the DOM automation controller.
 
 /**
  * Creates a peer connection. Must be called before most other public functions
- * in this file.
- * @param {Object} keygenAlgorithm An |AlgorithmIdentifier| to be used as
- * parameter to |RTCPeerConnection.generateCertificate|. The resulting
- * certificate will be used by the peer connection.
+ * in this file. Alternatively, see |preparePeerConnectionWithCertificate|.
+ * @param {Object} keygenAlgorithm Unless null, this is an |AlgorithmIdentifier|
+ * to be used as parameter to |RTCPeerConnection.generateCertificate|. The
+ * resulting certificate will be used by the peer connection. If null, a default
+ * certificate is generated by the |RTCPeerConnection| instead.
  */
 function preparePeerConnection(keygenAlgorithm = null) {
   if (gPeerConnection !== null)
-    throw failTest('creating peer connection, but we already have one.');
+    throw failTest('Creating peer connection, but we already have one.');
 
   if (keygenAlgorithm === null) {
     gPeerConnection = createPeerConnection_(null);
     returnToTest('ok-peerconnection-created');
   } else {
-    webkitRTCPeerConnection.generateCertificate(keygenAlgorithm).then(
+    RTCPeerConnection.generateCertificate(keygenAlgorithm).then(
         function(certificate) {
-          if (gPeerConnection !== null) {
-            throw failTest('peer connection already set during certificate ' +
-                + 'generation.');
-          }
-          gPeerConnection = createPeerConnection_(
-              {iceServers:[], certificates:[certificate]});
-          returnToTest('ok-peerconnection-created');
+          preparePeerConnectionWithCertificate(certificate);
         },
         function() {
           failTest('Certificate generation failed. keygenAlgorithm: ' +
               JSON.stringify(keygenAlgorithm));
         });
   }
 }
 
 /**
+ * Creates a peer connection. Must be called before most other public functions
+ * in this file. Alternatively, see |preparePeerConnection|.
+ * @param {!Object} certificate The |RTCCertificate| that will be used by the
+ * peer connection.
+ */
+function preparePeerConnectionWithCertificate(certificate) {
+  if (gPeerConnection !== null)
+    throw failTest('Creating peer connection, but we already have one.');
+  gPeerConnection = createPeerConnection_(
+      {iceServers:[], certificates:[certificate]});
+  returnToTest('ok-peerconnection-created');
+}
+
+/**
  * Asks this page to create a local offer.
  *
  * Returns a string on the format ok-(JSON encoded session description).
  *
  * @param {!Object} constraints Any createOffer constraints.
  * @param {string} videoCodec If not null, promotes the specified codec to be
  *     the default video codec, e.g. the first one in the list on the 'm=video'
  *     SDP offer line. |videoCodec| is the case-sensitive codec name, e.g.
  *     'VP8' or 'H264'.
  */
@@ skipping 268 matching lines @@
 function parseJson_(json) {
   // Escape since the \r\n in the SDP tend to get unescaped.
   jsonWithEscapedLineBreaks = json.replace(/\r\n/g, '\\r\\n');
   try {
     return JSON.parse(jsonWithEscapedLineBreaks);
   } catch (exception) {
     failTest('Failed to parse JSON: ' + jsonWithEscapedLineBreaks + ', got ' +
              exception);
   }
 }