chromeos: adds TouchDeviceServer and wires up in mushrome

ash/shell_port.h

 // Copyright 2016 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.
 
 #ifndef ASH_SHELL_PORT_H_
 #define ASH_SHELL_PORT_H_
 
 #include <stdint.h>
 
 #include <memory>
 #include <vector>
 
 #include "ash/ash_export.h"
 #include "ash/metrics/gesture_action_type.h"
 #include "ash/metrics/user_metrics_action.h"
 #include "ash/wm/lock_state_observer.h"
 #include "base/observer_list.h"
 #include "base/optional.h"
 #include "ui/base/cursor/cursor_data.h"
 #include "ui/base/ui_base_types.h"
 #include "ui/compositor/layer_type.h"
 #include "ui/wm/public/activation_change_observer.h"
 #include "ui/wm/public/window_types.h"
 
 namespace display {
 class Display;
 class ManagedDisplayInfo;
 class NativeDisplayDelegate;
+class TouchTransformSetter;
 }
 
 namespace gfx {
 class Insets;
 class Point;
 }
 
 namespace views {
 class PointerWatcher;
 enum class PointerWatcherEventTypes;
@@ skipping 79 matching lines @@
   bool IsSystemModalWindowOpen();
 
   // Creates a modal background (a partially-opaque fullscreen window) on all
   // displays for |window|.
   void CreateModalBackground(aura::Window* window);
 
   // Called when a modal window is removed. It will activate another modal
   // window if any, or remove modal screens on all displays.
   void OnModalWindowRemoved(aura::Window* removed);
 
+  // The return value from this is supplied to AshTouchTransformController; see
+  // it and TouchTransformSetter for details.
+  // TODO(sky): remove once simplified disable management enabled everywhere;
+  // http://crbug.com/718860.
+  virtual std::unique_ptr<display::TouchTransformSetter>
+  CreateTouchTransformDelegate() = 0;
+
   // For testing only: set simulation that a modal window is open
   void SimulateModalWindowOpenForTesting(bool modal_window_open) {
     simulate_modal_window_open_for_testing_ = modal_window_open;
   }
 
   // See aura::client::CursorClient for details on these.
   virtual void LockCursor() = 0;
   virtual void UnlockCursor() = 0;
   virtual void ShowCursor() = 0;
   virtual void HideCursor() = 0;
@@ skipping 103 matching lines @@
   static ShellPort* instance_;
 
   base::ObserverList<LockStateObserver> lock_state_observers_;
 
   bool simulate_modal_window_open_for_testing_ = false;
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_PORT_H_