Move TouchTransformerController to ui/display/.

ash/touch/ash_touch_transform_controller.cc

Index: ash/touch/ash_touch_transform_controller.cc
diff --git a/ash/touch/ash_touch_transform_controller.cc b/ash/touch/ash_touch_transform_controller.cc
new file mode 100644
index 0000000000000000000000000000000000000000..bc7be76c28e7afc10a5e18ea35a84b36cd650090
--- /dev/null
+++ b/ash/touch/ash_touch_transform_controller.cc
@@ -0,0 +1,31 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ash/touch/ash_touch_transform_controller.h"
+
+#include "ash/shell.h"
+#include "ui/display/manager/display_manager.h"
+
+namespace ash {
+
+AshTouchTransformController::AshTouchTransformController(
+    display::DisplayConfigurator* display_configurator,
+    display::DisplayManager* display_manager)
+    : TouchTransformController(display_configurator, display_manager) {
+  Shell::GetInstance()->window_tree_host_manager()->AddObserver(this);
+}
+
+AshTouchTransformController::~AshTouchTransformController() {
+  Shell::GetInstance()->window_tree_host_manager()->RemoveObserver(this);
+}
+
+void AshTouchTransformController::OnDisplaysInitialized() {
+  UpdateTouchTransforms();
+}
+
+void AshTouchTransformController::OnDisplayConfigurationChanged() {
+  UpdateTouchTransforms();
+}
+
+}  // namespace ash