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

ui/aura_shell/shell.h

Index: ui/aura_shell/shell.h
diff --git a/ui/aura_shell/shell.h b/ui/aura_shell/shell.h
index 66c88eb62054e816db12b01ec57914263e041aa4..634dbaa7b03e6a62936769554311a61293b4c190 100644
--- a/ui/aura_shell/shell.h
+++ b/ui/aura_shell/shell.h
@@ -35,6 +35,7 @@ namespace internal {
 class ActivationController;
 class AppList;
 class DragDropController;
+class InputMethodEventFilter;
 class ShadowController;
 class ShellAcceleratorFilter;
 class StackingController;
@@ -64,6 +65,7 @@ class AURA_SHELL_EXPORT Shell {
   // Adds or removes |filter| from the RootWindowEventFilter.
   void AddRootWindowEventFilter(aura::EventFilter* filter);
   void RemoveRootWindowEventFilter(aura::EventFilter* filter);
+  size_t GetRootWindowEventFilterCount() const;
 
   // Toggles between overview mode and normal mode.
   void ToggleOverview();
@@ -125,6 +127,8 @@ class AURA_SHELL_EXPORT Shell {
   scoped_ptr<internal::ShadowController> shadow_controller_;
   scoped_ptr<internal::TooltipController> tooltip_controller_;
 
+  // An event filter that pre-handles all key events to send them to an IME.
+  scoped_ptr<internal::InputMethodEventFilter> input_method_filter_;
   // An event filter that pre-handles global accelerators.
   scoped_ptr<internal::ShellAcceleratorFilter> accelerator_filter_;