mash: Fix crash in browser driver.

mash/browser_driver/browser_driver_application_delegate.cc

Index: mash/browser_driver/browser_driver_application_delegate.cc
diff --git a/mash/browser_driver/browser_driver_application_delegate.cc b/mash/browser_driver/browser_driver_application_delegate.cc
index 8e1b633b3799e4e74e83b1b367ccfaf53030c421..438477f8bb5f0cb7af07e1794cff74e2a30fedb8 100644
--- a/mash/browser_driver/browser_driver_application_delegate.cc
+++ b/mash/browser_driver/browser_driver_application_delegate.cc
@@ -84,12 +84,12 @@ void BrowserDriverApplicationDelegate::AddAccelerators() {
 
   if (binding_.is_bound())
     binding_.Unbind();
+  registrar->SetHandler(binding_.CreateInterfacePtrAndBind());
   // If the window manager restarts, the handler pipe will close and we'll need
   // to re-add our accelerators when the window manager comes back up.
   binding_.set_connection_error_handler(
       base::Bind(&BrowserDriverApplicationDelegate::AddAccelerators,
                  base::Unretained(this)));
-  registrar->SetHandler(binding_.CreateInterfacePtrAndBind());
 
   for (const AcceleratorSpec& spec : g_spec) {
     registrar->AddAccelerator(