Add tests for closing a frame within the scope of a getusermedia callback.

content/test/data/media/webrtc_test_utilities.js

Index: content/test/data/media/webrtc_test_utilities.js
diff --git a/content/test/data/media/webrtc_test_utilities.js b/content/test/data/media/webrtc_test_utilities.js
index 5fd38113882b7c6bf7f9db219850291da9e4d2c6..befc1dc7ee4c5062f370e6170920811f794db016 100644
--- a/content/test/data/media/webrtc_test_utilities.js
+++ b/content/test/data/media/webrtc_test_utilities.js
@@ -26,7 +26,12 @@ function setAllEventsOccuredHandler(handler) {
 
 // Tells the C++ code we succeeded, which will generally exit the test.
 function reportTestSuccess() {
-  window.domAutomationController.send('OK');
+// This function enqueues sending an OK back to the test, rather than doing

[phoglund_chromium, 2015/04/10 09:58:40]

Nit: indent comments 2 steps.

+// it directly. We do this so we catch crashes that occur in the current
+// execution context, but after reportTestSuccess is invoked.
+  setTimeout(function () {
+    window.domAutomationController.send('OK');
+  }, 0);
 }
 
 // Returns a custom return value to the test.
@@ -228,4 +233,4 @@ function hasVideoInputDeviceOnSystem() {
     else
       sendValueToTest('no-video-input-devices');
   });
-}
+}