exo: Implement support for zcr_keyboard_configuration_v1 protocol.

components/exo/wm_helper_ash.h

Index: components/exo/wm_helper_ash.h
diff --git a/components/exo/wm_helper_ash.h b/components/exo/wm_helper_ash.h
index 64797897178e7859d80e0c3d6e42a6ef81481aa8..ce44f948eeef55b597c48645ecab0283bf778ddb 100644
--- a/components/exo/wm_helper_ash.h
+++ b/components/exo/wm_helper_ash.h
@@ -11,6 +11,7 @@
 #include "components/exo/wm_helper.h"
 #include "ui/aura/client/cursor_client_observer.h"
 #include "ui/aura/client/focus_change_observer.h"
+#include "ui/events/devices/input_device_event_observer.h"
 #include "ui/wm/public/activation_change_observer.h"
 
 namespace exo {
@@ -21,7 +22,8 @@ class WMHelperAsh : public WMHelper,
                     public aura::client::FocusChangeObserver,
                     public aura::client::CursorClientObserver,
                     public ash::AccessibilityObserver,
-                    public ash::ShellObserver {
+                    public ash::ShellObserver,
+                    public ui::InputDeviceEventObserver {
  public:
   WMHelperAsh();
   ~WMHelperAsh() override;
@@ -64,6 +66,9 @@ class WMHelperAsh : public WMHelper,
   void OnMaximizeModeStarted() override;
   void OnMaximizeModeEnded() override;
 
+  // Overriden from ui::InputDeviceEventObserver:
+  void OnKeyboardDeviceConfigurationChanged() override;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(WMHelperAsh);
 };