exo: Implement support for zcr_keyboard_configuration_v1 protocol.

components/exo/wm_helper_ash.cc

Index: components/exo/wm_helper_ash.cc
diff --git a/components/exo/wm_helper_ash.cc b/components/exo/wm_helper_ash.cc
index f70155c7a562f8d7b5928e8424dceb7fab9d3a57..9026e20468c632ad6081a2b29980e4ec4dc7ce57 100644
--- a/components/exo/wm_helper_ash.cc
+++ b/components/exo/wm_helper_ash.cc
@@ -11,6 +11,7 @@
 #include "base/memory/singleton.h"
 #include "ui/aura/client/focus_client.h"
 #include "ui/display/manager/display_manager.h"
+#include "ui/events/devices/device_data_manager.h"
 #include "ui/wm/public/activation_client.h"
 
 namespace exo {
@@ -24,6 +25,7 @@ WMHelperAsh::WMHelperAsh() {
   aura::client::FocusClient* focus_client =
       aura::client::GetFocusClient(ash::Shell::GetPrimaryRootWindow());
   focus_client->AddObserver(this);
+  ui::DeviceDataManager::GetInstance()->AddObserver(this);
 }
 
 WMHelperAsh::~WMHelperAsh() {
@@ -34,6 +36,7 @@ WMHelperAsh::~WMHelperAsh() {
   focus_client->RemoveObserver(this);
   ash::Shell::GetInstance()->activation_client()->RemoveObserver(this);
   ash::WmShell::Get()->RemoveShellObserver(this);
+  ui::DeviceDataManager::GetInstance()->RemoveObserver(this);
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -133,4 +136,8 @@ void WMHelperAsh::OnMaximizeModeEnded() {
   NotifyMaximizeModeEnded();
 }
 
+void WMHelperAsh::OnKeyboardDeviceConfigurationChanged() {
+  NotifyKeyboardDeviceConfigurationChanged();
+}
+
 }  // namespace exo