Stops the throbber from spinning if the user cancels a beforeunload dialog,...

chrome/browser/renderer_host/render_view_host.h

Index: chrome/browser/renderer_host/render_view_host.h
===================================================================
--- chrome/browser/renderer_host/render_view_host.h	(revision 27429)
+++ chrome/browser/renderer_host/render_view_host.h	(working copy)
@@ -625,6 +625,11 @@
   // must return to the renderer to unblock it.
   IPC::Message* run_modal_reply_msg_;
 
+  // Set to true when there is an active "before unload" dialog.  When true,
+  // we've forced the throbber to start in Navigate, and we need to remember to
+  // turn it off in JavaScriptMessageBoxClosed if the navigation is canceled.
+  bool is_showing_before_unload_dialog_;
+
   // Set to true when there is a pending ViewMsg_ShouldClose message pending.
   // This ensures we don't spam the renderer many times to close. When true,
   // the value of unload_ack_is_for_cross_site_transition_ indicates which type