[ios clean] Move dispatcher out of Browser.

ios/clean/chrome/browser/ui/ntp/ntp_home_coordinator.mm

Index: ios/clean/chrome/browser/ui/ntp/ntp_home_coordinator.mm
diff --git a/ios/clean/chrome/browser/ui/ntp/ntp_home_coordinator.mm b/ios/clean/chrome/browser/ui/ntp/ntp_home_coordinator.mm
index 92484b3c5cb39246c8e61efa96255d3fc481aef3..c3c56fa2ec1bc99f5aaec86dca8b7ffb0252c0bd 100644
--- a/ios/clean/chrome/browser/ui/ntp/ntp_home_coordinator.mm
+++ b/ios/clean/chrome/browser/ui/ntp/ntp_home_coordinator.mm
@@ -29,20 +29,19 @@
 - (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];
@@ -52,9 +51,8 @@
   [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