[ios clean] Moves animator and presenters under transitions

ios/clean/chrome/browser/ui/tools/tools_menu_transition_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.
-
-#import "ios/clean/chrome/browser/ui/tools/tools_menu_transition_controller.h"
-
-#import "ios/clean/chrome/browser/ui/presenters/menu_presentation_controller.h"
-
-@interface ToolsMenuTransitionController ()
-@property(nonatomic, weak) id<ToolsMenuCommands> dispatcher;
-@end
-
-@implementation ToolsMenuTransitionController
-@synthesize dispatcher = _dispatcher;
-
-- (instancetype)initWithDispatcher:(id<ToolsMenuCommands>)dispatcher {
-  self = [super init];
-  if (self) {
-    _dispatcher = dispatcher;
-  }
-  return self;
-}
-
-- (UIPresentationController*)
-presentationControllerForPresentedViewController:(UIViewController*)presented
-                        presentingViewController:(UIViewController*)presenting
-                            sourceViewController:(UIViewController*)source {
-  MenuPresentationController* menuPresentation =
-      [[MenuPresentationController alloc]
-          initWithPresentedViewController:presented
-                 presentingViewController:presenting];
-  menuPresentation.dispatcher = static_cast<id>(self.dispatcher);
-  return menuPresentation;
-}
-
-@end