browser-plugin: Remove event handling code, and use CustomEvents in webkit instead.

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 c0168b59805df366150591f6abcaeb61f9b773c1..fb80dcbe7164d16a522680ed8520589b228413d3 100644
--- a/content/test/data/browser_plugin_embedder.html
+++ b/content/test/data/browser_plugin_embedder.html
@@ -1,9 +1,9 @@
 <script type="text/javascript">
 function loadAbort(evt) {
-  document.title = evt.type;
+  document.title = evt.detail.reason;
 }
 function loadStart(evt) {
-  document.title = evt.url;
+  document.title = evt.detail.url;
 }
 function loadStop(evt) {
   document.title = "loadStop";
@@ -11,17 +11,17 @@ function loadStop(evt) {
 
 var commitIsTopLevel;
 function loadCommit(evt) {
-  document.title = "loadCommit:" + evt.url;
-  commitIsTopLevel = evt.isTopLevel;
+  document.title = "loadCommit:" + evt.detail.url;
+  commitIsTopLevel = evt.detail.isTopLevel;
 }
 
 var redirectOldUrl;
 var redirectNewUrl;
 function loadRedirect(event) {
   document.title = "redirected";
-  if (event.isTopLevel) {
-    redirectOldUrl = event.oldUrl;
-    redirectNewUrl = event.newUrl;
+  if (event.detail.isTopLevel) {
+    redirectOldUrl = event.detail.oldUrl;
+    redirectNewUrl = event.detail.newUrl;
   }
 }
 function SetSrc(src) {