[CRD iOS] Move UI stuff into a subdirectory

remoting/client/ui/fling_animation.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_FLING_ANIMATION_H_
-#define REMOTING_CLIENT_FLING_ANIMATION_H_
+#ifndef REMOTING_CLIENT_UI_FLING_ANIMATION_H_
+#define REMOTING_CLIENT_UI_FLING_ANIMATION_H_
 
 #include <memory>
 
 #include "base/callback.h"
 #include "base/time/tick_clock.h"
-#include "remoting/client/fling_tracker.h"
+#include "remoting/client/ui/fling_tracker.h"
 
 namespace remoting {
 
 // This class helps interpolating the positions of an object with the given
 // initial velocity and feeds the change in position back to the callback.
 class FlingAnimation {
  public:
   // arguments are delta_x and delta_y with respect to the positions at previous
   // tick.
   using FlingCallback = base::Callback<void(float, float)>;
@@ skipping 23 matching lines @@
   base::TimeTicks fling_start_time_;
 
   std::unique_ptr<base::TickClock> clock_;
 
   // FlingAnimation is neither copyable nor movable.
   FlingAnimation(const FlingAnimation&) = delete;
   FlingAnimation& operator=(const FlingAnimation&) = delete;
 };
 
 }  // namespace remoting
-#endif  // REMOTING_CLIENT_FLING_ANIMATION_H_
+#endif  // REMOTING_CLIENT_UI_FLING_ANIMATION_H_