Ability to persist RTCCertificate in IndexedDB (enables cloning).

chrome/test/data/webrtc/peerconnection.js

Index: chrome/test/data/webrtc/peerconnection.js
diff --git a/chrome/test/data/webrtc/peerconnection.js b/chrome/test/data/webrtc/peerconnection.js
index 50459b7c62caec20e0d48d36ddd066f00d351837..639e0f41a8ff34624bc5be8ea6fed1aeb640b757 100644
--- a/chrome/test/data/webrtc/peerconnection.js
+++ b/chrome/test/data/webrtc/peerconnection.js
@@ -28,28 +28,23 @@ var gHasSeenCryptoInSdp = 'no-crypto-seen';
 
 /**
  * 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: ' +
@@ -59,6 +54,20 @@ function preparePeerConnection(keygenAlgorithm = null) {
 }
 
 /**
+ * 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).