[CRD iOS] Move UI stuff into a subdirectory

remoting/client/ui/gesture_interpreter.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_GESTURE_INTERPRETER_H_
-#define REMOTING_CLIENT_GESTURE_INTERPRETER_H_
+#ifndef REMOTING_CLIENT_UI_GESTURE_INTERPRETER_H_
+#define REMOTING_CLIENT_UI_GESTURE_INTERPRETER_H_
 
 #include <memory>
 
 #include "remoting/client/chromoting_session.h"
-#include "remoting/client/desktop_viewport.h"
-#include "remoting/client/fling_animation.h"
+#include "remoting/client/ui/desktop_viewport.h"
+#include "remoting/client/ui/fling_animation.h"
 #include "remoting/proto/event.pb.h"
 
 namespace remoting {
 
 class InputStrategy;
 
 // This is a class for interpreting a raw touch input into actions like moving
 // the viewport and injecting mouse clicks.
 class GestureInterpreter {
  public:
@@ skipping 48 matching lines @@
   bool is_dragging_mode_ = false;
 
   FlingAnimation pan_animation_;
 
   // GestureInterpreter is neither copyable nor movable.
   GestureInterpreter(const GestureInterpreter&) = delete;
   GestureInterpreter& operator=(const GestureInterpreter&) = delete;
 };
 
 }  // namespace remoting
-#endif  // REMOTING_CLIENT_GESTURE_INTERPRETER_H_
+#endif  // REMOTING_CLIENT_UI_GESTURE_INTERPRETER_H_