[ios clean] Move dispatcher out of Browser.

ios/clean/chrome/browser/ui/ntp/ntp_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_coordinator.h"
 
 #include "base/logging.h"
 #include "ios/chrome/browser/ui/ui_util.h"
 #import "ios/clean/chrome/browser/ui/bookmarks/bookmarks_coordinator.h"
 #import "ios/clean/chrome/browser/ui/commands/ntp_commands.h"
@@ skipping 15 matching lines @@
 @end
 
 @implementation NTPCoordinator
 @synthesize mediator = _mediator;
 @synthesize viewController = _viewController;
 
 - (void)start {
   self.viewController = [[NTPViewController alloc] init];
   self.mediator = [[NTPMediator alloc] initWithConsumer:self.viewController];
 
-  CommandDispatcher* dispatcher = self.browser->dispatcher();
   // NTPCommands
-  [dispatcher startDispatchingToTarget:self
-                           forSelector:@selector(showNTPHomePanel)];
-  [dispatcher startDispatchingToTarget:self
-                           forSelector:@selector(showNTPBookmarksPanel)];
-  [dispatcher startDispatchingToTarget:self
-                           forSelector:@selector(showNTPRecentTabsPanel)];
-  self.viewController.dispatcher = static_cast<id>(self.browser->dispatcher());
+  [self.dispatcher startDispatchingToTarget:self
+                                forSelector:@selector(showNTPHomePanel)];
+  [self.dispatcher startDispatchingToTarget:self
+                                forSelector:@selector(showNTPBookmarksPanel)];
+  [self.dispatcher startDispatchingToTarget:self
+                                forSelector:@selector(showNTPRecentTabsPanel)];
+  self.viewController.dispatcher = self.callableDispatcher;
   [super start];
 }
 
 - (void)stop {
   [super stop];
-  [self.browser->dispatcher() stopDispatchingToTarget:self];
+  [self.dispatcher stopDispatchingToTarget:self];
 }
 
 - (void)childCoordinatorDidStart:(BrowserCoordinator*)coordinator {
   if ([coordinator isKindOfClass:[NTPHomeCoordinator class]]) {
     self.viewController.homeViewController = coordinator.viewController;
 
   } else if ([coordinator isKindOfClass:[BookmarksCoordinator class]]) {
     if (IsIPadIdiom()) {
       self.viewController.bookmarksViewController = coordinator.viewController;
     } else {
@@ skipping 28 matching lines @@
 }
 
 - (void)showNTPRecentTabsPanel {
   RecentTabsCoordinator* panelCoordinator =
       [[RecentTabsCoordinator alloc] init];
   [self addChildCoordinator:panelCoordinator];
   [panelCoordinator start];
 }
 
 @end