Add test to verify we can cancel the GetUserMedia request right after sending the request

chrome/test/data/webrtc/getusermedia.js

Index: chrome/test/data/webrtc/getusermedia.js
diff --git a/chrome/test/data/webrtc/getusermedia.js b/chrome/test/data/webrtc/getusermedia.js
index bdfd28ce38400e56e06cd5ee05e1a6041f0eb384..1f5baaf4a94104761f925fa126cc46a6e74990dc 100644
--- a/chrome/test/data/webrtc/getusermedia.js
+++ b/chrome/test/data/webrtc/getusermedia.js
@@ -37,6 +37,16 @@ function getUserMedia(requestVideo, requestAudio) {
 }
 
 /**
+ * This function cancel the GetUserMedia request by reloading the web page.
+ */

[phoglund_chromium, 2012/07/04 14:20:58]

I think it makes more sense to call this guy ReloadWebPage. Then write a comment
in the test itself which says "cancel the request by reloading the web page".
Then this function makes a lot more sense on its own since someone could really
call it independent of a getUserMedia request.

[no longer working on chromium, 2012/07/05 14:05:19]

Done.

+function CancelGetUserMediaRequest() {
+  location.reload();
+

[phoglund_chromium, 2012/07/04 14:20:58]

Reloading page

[no longer working on chromium, 2012/07/05 14:05:19]

Done.

+  debug("Cancelling GetUserMedia request.");

[phoglund_chromium, 2012/07/04 14:20:58]

ok-reloaded-page

[no longer working on chromium, 2012/07/05 14:05:19]

Done.

+  returnToPyAuto('ok-calceled-request');
+}
+
+/**
  * Must be called after calling getUserMedia. Returns not-called-yet if we have
  * not yet been called back by WebRTC. Otherwise it returns either ok-got-stream
  * or failed-with-error-x (where x is the error code from the error callback)
@@ -73,4 +83,4 @@ function getUserMediaOkCallback(stream) {
 
 function getUserMediaFailedCallback(error) {
   gRequestWebcamAndMicrophoneResult = 'failed-with-error-' + error.code;

[phoglund_chromium, 2012/07/04 14:20:58]

Not sure what happened on this line?

[no longer working on chromium, 2012/07/05 14:05:19]

Not sure, it does not change anything in my editor.

-}
+}