Move TouchTransformerController to ui/display/.

ash/shell.h

Index: ash/shell.h
diff --git a/ash/shell.h b/ash/shell.h
index 86d2677f286c910c9d2db731e2ee68e7e8664e59..179ea73a0d8ad7da72815d442f1320e489302615 100644
--- a/ash/shell.h
+++ b/ash/shell.h
@@ -111,7 +111,7 @@ class SystemGestureEventFilter;
 class SystemModalContainerEventFilter;
 class SystemTray;
 class ToplevelWindowEventHandler;
-class TouchTransformerController;
+class AshTouchTransformController;
 class ScreenLayoutObserver;
 class VirtualKeyboardController;
 class VideoActivityNotifier;
@@ -258,7 +258,7 @@ class ASH_EXPORT Shell : public SystemModalContainerEventFilterDelegate,
   PowerEventObserver* power_event_observer() {
     return power_event_observer_.get();
   }
-  TouchTransformerController* touch_transformer_controller() {
+  AshTouchTransformController* touch_transformer_controller() {
     return touch_transformer_controller_.get();
   }
   LaserPointerController* laser_pointer_controller() {
@@ -503,7 +503,7 @@ class ASH_EXPORT Shell : public SystemModalContainerEventFilterDelegate,
   std::unique_ptr<ScreenOrientationController> screen_orientation_controller_;
   std::unique_ptr<ScreenLayoutObserver> screen_layout_observer_;
 
-  std::unique_ptr<TouchTransformerController> touch_transformer_controller_;
+  std::unique_ptr<AshTouchTransformController> touch_transformer_controller_;
 
   std::unique_ptr<ui::EventHandler> magnifier_key_scroll_handler_;
   std::unique_ptr<ui::EventHandler> speech_feedback_handler_;