[ios] Adds support for Find in Page to the new architecture.

ios/clean/chrome/browser/ui/tools/tools_coordinator.mm

 // Copyright 2016 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_coordinator.h"
 
 #import "ios/clean/chrome/browser/ui/animators/zoom_transition_animator.h"
 #import "ios/clean/chrome/browser/ui/presenters/menu_presentation_controller.h"
 #import "ios/clean/chrome/browser/ui/tools/menu_view_controller.h"
 #import "ios/clean/chrome/browser/ui/tools/tools_mediator.h"
@@ skipping 15 matching lines @@
 
 #pragma mark - BrowserCoordinator
 
 - (void)start {
   self.menuViewController = [[MenuViewController alloc] init];
   self.menuViewController.modalPresentationStyle = UIModalPresentationCustom;
   self.menuViewController.transitioningDelegate = self;
   self.menuViewController.dispatcher =
       static_cast<id>(self.browser->dispatcher());
   _mediator = [[ToolsMediator alloc] initWithConsumer:self.menuViewController];
+  self.menuViewController.dispatcher =
+      static_cast<id>(self.browser->dispatcher());
 
   [self.context.baseViewController presentViewController:self.menuViewController
                                                 animated:self.context.animated
                                               completion:nil];
   [super start];
 }
 
 - (void)stop {
   [super stop];
   [self.menuViewController.presentingViewController
@@ skipping 27 matching lines @@
                             sourceViewController:(UIViewController*)source {
   MenuPresentationController* menuPresentation =
       [[MenuPresentationController alloc]
           initWithPresentedViewController:presented
                  presentingViewController:presenting];
   menuPresentation.dispatcher = static_cast<id>(self.browser->dispatcher());
   return menuPresentation;
 }
 
 @end