[ios clean] Moves animator and presenters under transitions

ios/clean/chrome/browser/ui/transitions/zooming_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/transitions/zooming_menu_transition_controller.h"
 
-#import "ios/clean/chrome/browser/ui/presenters/menu_presentation_controller.h"
+#import "ios/clean/chrome/browser/ui/transitions/presenters/menu_presentation_controller.h"
 
-@interface ToolsMenuTransitionController ()
+@interface ZoomingMenuTransitionController ()
 @property(nonatomic, weak) id<ToolsMenuCommands> dispatcher;
 @end
 
-@implementation ToolsMenuTransitionController
+@implementation ZoomingMenuTransitionController
 @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);
+  menuPresentation.dispatcher = self.dispatcher;
   return menuPresentation;
 }
 
 @end