Add test for sending square resolution video on a PeerConnection.

content/test/data/media/peerconnection-call.html

Index: content/test/data/media/peerconnection-call.html
diff --git a/content/test/data/media/peerconnection-call.html b/content/test/data/media/peerconnection-call.html
index 29a23b8f9151bde9b034f3b21a6c4eb347144d21..2327647f0225373f6d94f9279de2ce31403c1f28 100644
--- a/content/test/data/media/peerconnection-call.html
+++ b/content/test/data/media/peerconnection-call.html
@@ -63,6 +63,23 @@
     waitForVideo('remote-view-2');
   }
 
+  // Test that we can setup call with an audio and video track and check that 
+  // the video resolution is as expected.
+  function callAndExpectResolution(constraints,
+                                   expected_width,
+                                   expected_height) {
+    createConnections(null);
+    navigator.webkitGetUserMedia(constraints,
+      addStreamToBothConnectionsAndNegotiate, printGetUserMediaError);
+    waitForVideoWithResolution('remote-view-1',
+                               expected_width,
+                               expected_height);
+    waitForVideoWithResolution('remote-view-2',
+                               expected_width,
+                               expected_height);
+  }
+
+
   // First calls without streams on any connections, and then adds a stream
   // to peer connection 1 which gets sent to peer connection 2. We must wait
   // for the first negotiation to complete before starting the second one, which