[CRD iOS] Move UI stuff into a subdirectory

remoting/ios/app/host_view_controller.mm

 // 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.
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 #import "remoting/ios/app/host_view_controller.h"
 
 #include <memory>
 
 #import <GLKit/GLKit.h>
 
 #import "ios/third_party/material_components_ios/src/components/Buttons/src/MaterialButtons.h"
 #import "remoting/ios/client_gestures.h"
 #import "remoting/ios/client_keyboard.h"
 #import "remoting/ios/session/remoting_client.h"
 
-#include "remoting/client/gesture_interpreter.h"
+#include "remoting/client/ui/gesture_interpreter.h"
 
 static const CGFloat kFabInset = 15.f;
 static const CGFloat kKeyboardAnimationTime = 0.3;
 
 @interface HostViewController () {
   RemotingClient* _client;
   MDCFloatingButton* _floatingButton;
   ClientGestures* _clientGestures;
   ClientKeyboard* _clientKeyboard;
   CGSize _keyboardSize;
@@ skipping 184 matching lines @@
     [self dismissViewControllerAnimated:YES completion:nil];
   };
   [alert addAction:[UIAlertAction actionWithTitle:@"Disconnect"
                                             style:UIAlertActionStyleCancel
                                           handler:disconnectHandler]];
 
   [self presentViewController:alert animated:YES completion:nil];
 }
 
 @end