More Aura fixes to build with chromeos==1

chrome/browser/chromeos/login/helper.cc

Index: chrome/browser/chromeos/login/helper.cc
diff --git a/chrome/browser/chromeos/login/helper.cc b/chrome/browser/chromeos/login/helper.cc
index 435c7d933cd645e9b1ae6b949e15ad200165b52f..b5e56933cfbebd52e4b84b10ffeb85294f5585fe 100644
--- a/chrome/browser/chromeos/login/helper.cc
+++ b/chrome/browser/chromeos/login/helper.cc
@@ -82,6 +82,7 @@ ThrobberHostView::~ThrobberHostView() {
 }
 
 void ThrobberHostView::StartThrobber() {
+#if defined(TOOLKIT_USES_GTK)
   StopThrobber();
 
   views::Widget* host_widget = host_view_->GetWidget();
@@ -118,6 +119,10 @@ void ThrobberHostView::StartThrobber() {
   // WM can ignore bounds before widget is shown.
   throbber_widget_->SetBounds(throbber_bounds);
   throbber->Start();
+#else
+  // TODO(saintlou): Do we need a throbber for Aura?
+  NOTIMPLEMENTED();
+#endif
 }
 
 void ThrobberHostView::StopThrobber() {