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

ash/wm/root_window_event_filter.cc

Index: ash/wm/root_window_event_filter.cc
diff --git a/ash/wm/root_window_event_filter.cc b/ash/wm/root_window_event_filter.cc
index 6ccffe3d19e256e5fe119f68be60c38d455f34ab..7ed9ed88abeb4bc3b4702990d930162e93e46087 100644
--- a/ash/wm/root_window_event_filter.cc
+++ b/ash/wm/root_window_event_filter.cc
@@ -61,6 +61,10 @@ void RootWindowEventFilter::RemoveFilter(aura::EventFilter* filter) {
   filters_.RemoveObserver(filter);
 }
 
+size_t RootWindowEventFilter::GetFilterCount() const {
+  return filters_.size();
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // RootWindowEventFilter, EventFilter implementation: