[CRD iOS] Move UI stuff into a subdirectory

remoting/client/input_strategy.h

-// 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.
-
-#ifndef REMOTING_CLIENT_INPUT_STRATEGY_H_
-#define REMOTING_CLIENT_INPUT_STRATEGY_H_
-
-namespace remoting {
-
-class DesktopViewport;
-
-// This is an interface used by GestureInterpreter to customize the way gestures
-// are handled.
-class InputStrategy {
- public:
-  virtual ~InputStrategy() {}
-
-  // Called when the GestureInterpreter receives a pinch gesture. The
-  // implementation is responsible for modifying the viewport and observing the
-  // change.
-  virtual void HandlePinch(float pivot_x,
-                           float pivot_y,
-                           float scale,
-                           DesktopViewport* viewport) = 0;
-
-  // Called when the GestureInterpreter receives a pan gesture. The
-  // implementation is responsible for modifying the viewport and observing the
-  // change.
-  // is_dragging_mode: true if the user is trying to drag something while
-  //     panning on the screen.
-  virtual void HandlePan(float translation_x,
-                         float translation_y,
-                         bool is_dragging_mode,
-                         DesktopViewport* viewport) = 0;
-
-  // Called when a gesture is done at location (touch_x, touch_y) and the
-  // GestureInterpreter needs to get back the cursor position to inject mouse
-  // the mouse event.
-  virtual void FindCursorPositions(float touch_x,
-                                   float touch_y,
-                                   const DesktopViewport& viewport,
-                                   float* cursor_x,
-                                   float* cursor_y) = 0;
-
-  // Returns true if the input strategy maintains a visible cursor on the
-  // desktop.
-  virtual bool IsCursorVisible() const = 0;
-};
-
-}  // namespace remoting
-#endif  // REMOTING_CLIENT_INPUT_STRATEGY_H_