Browser plugin: Implement loadStart and loadAbort events

content/test/data/browser_plugin_embedder.html

Index: content/test/data/browser_plugin_embedder.html
diff --git a/content/test/data/browser_plugin_embedder.html b/content/test/data/browser_plugin_embedder.html
index fb70190a767173c43b5f411923db241b084328da..dcf150c13eda6044365472d8f1f99fa8a1c0fc85 100644
--- a/content/test/data/browser_plugin_embedder.html
+++ b/content/test/data/browser_plugin_embedder.html
@@ -1,7 +1,12 @@
 <script type="text/javascript">
+var url;

[Charlie Reis, 2012/10/03 01:52:30]

nit: loadStartUrl
That will make the test more obvious, and leave this flexible for other event
listeners.

[Fady Samuel, 2012/10/04 00:43:38]

Done.

+function loadStart(event) {
+  url = event.url;
+}
 function SetSrc(src) {
   var plugin = document.getElementById('plugin');
   plugin.src = src;
+  plugin.addEventListener('loadStart', loadStart);
 }
 function SetSize(w, h) {
   var plugin = document.getElementById('plugin');
@@ -20,6 +25,7 @@ function Go(relativeIndex) {
   var plugin = document.getElementById('plugin');
   plugin.go(relativeIndex);
 }
+

[Charlie Reis, 2012/10/03 01:52:30]

nit: Remove.  (No need for extra code churn.)

[Fady Samuel, 2012/10/04 00:43:38]

Done.

 </script>
 
 <object id="plugin"