IME (input method editor) support for Aura, part 3 of 3: Use ui::InputMethod in ash.

ui/aura_shell/root_window_event_filter.cc

Index: ui/aura_shell/root_window_event_filter.cc
diff --git a/ui/aura_shell/root_window_event_filter.cc b/ui/aura_shell/root_window_event_filter.cc
index b627341ebecd9ffd91c9a830f798a9fd9123bebc..777c63eefb50cdb814405e03462d80f2eb65dc44 100644
--- a/ui/aura_shell/root_window_event_filter.cc
+++ b/ui/aura_shell/root_window_event_filter.cc
@@ -61,6 +61,10 @@ void RootWindowEventFilter::RemoveFilter(aura::EventFilter* filter) {
   filters_.RemoveObserver(filter);
 }
 
+size_t RootWindowEventFilter::GetNumFilters() const {
+  return filters_.size();
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // RootWindowEventFilter, EventFilter implementation: