[ios clean] Move dispatcher out of Browser.

ios/clean/chrome/browser/ui/ntp/ntp_home_coordinator.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/ntp/ntp_home_coordinator.h"
 
 #import "ios/chrome/browser/ui/ntp/google_landing_mediator.h"
 #import "ios/chrome/browser/ui/ntp/google_landing_view_controller.h"
 #import "ios/clean/chrome/browser/ui/ntp/ntp_home_mediator.h"
 #import "ios/shared/chrome/browser/ui/browser_list/browser.h"
@@ skipping 11 matching lines @@
 @end
 
 @implementation NTPHomeCoordinator
 @synthesize mediator = _mediator;
 @synthesize googleLandingMediator = _googleLandingMediator;
 @synthesize viewController = _viewController;
 
 - (void)start {
   // PLACEHOLDER: self.mediator and self.oldMediator should be merged together.
   self.mediator = [[NTPHomeMediator alloc] init];
-  self.mediator.dispatcher = static_cast<id>(self.browser->dispatcher());
+  self.mediator.dispatcher = self.callableDispatcher;
 
   // PLACEHOLDER: These will go elsewhere.
-  [self.browser->dispatcher() startDispatchingToTarget:self.mediator
-                                           forProtocol:@protocol(UrlLoader)];
-  [self.browser->dispatcher()
-      startDispatchingToTarget:self.mediator
-                   forProtocol:@protocol(OmniboxFocuser)];
+  [self.dispatcher startDispatchingToTarget:self.mediator
+                                forProtocol:@protocol(UrlLoader)];
+  [self.dispatcher startDispatchingToTarget:self.mediator
+                                forProtocol:@protocol(OmniboxFocuser)];
   self.viewController = [[GoogleLandingViewController alloc] init];
-  self.viewController.dispatcher = static_cast<id>(self.browser->dispatcher());
+  self.viewController.dispatcher = self.callableDispatcher;
   self.googleLandingMediator = [[GoogleLandingMediator alloc]
       initWithConsumer:self.viewController
           browserState:self.browser->browser_state()
-            dispatcher:static_cast<id>(self.browser->dispatcher())
+            dispatcher:self.callableDispatcher
           webStateList:&self.browser->web_state_list()];
   self.viewController.dataSource = self.googleLandingMediator;
   [super start];
 }
 
 - (void)stop {
   [super stop];
   [self.googleLandingMediator shutdown];
 
-  [self.browser->dispatcher() stopDispatchingForProtocol:@protocol(UrlLoader)];
-  [self.browser->dispatcher()
-      stopDispatchingForProtocol:@protocol(OmniboxFocuser)];
+  [self.dispatcher stopDispatchingForProtocol:@protocol(UrlLoader)];
+  [self.dispatcher stopDispatchingForProtocol:@protocol(OmniboxFocuser)];
 }
 
 @end