Fix plugin hang that Earth team found....

chrome/plugin/webplugin_delegate_stub.cc

Index: chrome/plugin/webplugin_delegate_stub.cc
===================================================================
--- chrome/plugin/webplugin_delegate_stub.cc	(revision 10079)
+++ chrome/plugin/webplugin_delegate_stub.cc	(working copy)
@@ -257,7 +257,8 @@
   *npobject_ptr = object;
   // The stub will delete itself when the proxy tells it that it's released, or
   // otherwise when the channel is closed.
-  NPObjectStub* stub = new NPObjectStub(object, channel_.get(), *route_id);
+  NPObjectStub* stub = new NPObjectStub(
+      object, channel_.get(), *route_id, webplugin_->modal_dialog_event());
 
   // Release ref added by GetPluginScriptableObject (our stub holds its own).
   NPN_ReleaseObject(object);