[ios clean] Move dispatcher out of Browser.

ios/clean/chrome/browser/ui/web_contents/web_coordinator.mm

Index: ios/clean/chrome/browser/ui/web_contents/web_coordinator.mm
diff --git a/ios/clean/chrome/browser/ui/web_contents/web_coordinator.mm b/ios/clean/chrome/browser/ui/web_contents/web_coordinator.mm
index 6198cab7d5b55770b97724151373fdd9f7165066..cae580d00b2f5d6e336071f24a8b526969ecf6f7 100644
--- a/ios/clean/chrome/browser/ui/web_contents/web_coordinator.mm
+++ b/ios/clean/chrome/browser/ui/web_contents/web_coordinator.mm
@@ -64,12 +64,11 @@
 - (void)childCoordinatorDidStart:(BrowserCoordinator*)childCoordinator {
   // Register to receive relevant ContextMenuCommands.
   if ([childCoordinator isKindOfClass:[WebContextMenuCoordinator class]]) {
-    [self.browser->dispatcher()
+    [self.dispatcher
         startDispatchingToTarget:self
                      forSelector:@selector(executeContextMenuScript:)];
-    [self.browser->dispatcher()
-        startDispatchingToTarget:self
-                     forSelector:@selector(openContextMenuImage:)];
+    [self.dispatcher startDispatchingToTarget:self
+                                  forSelector:@selector(openContextMenuImage:)];
   }
   [self.viewController presentViewController:childCoordinator.viewController
                                     animated:YES
@@ -79,9 +78,9 @@
 - (void)childCoordinatorWillStop:(BrowserCoordinator*)childCoordinator {
   // Unregister ContextMenuCommands once the UI has been dismissed.
   if ([childCoordinator isKindOfClass:[WebContextMenuCoordinator class]]) {
-    [self.browser->dispatcher()
+    [self.dispatcher
         stopDispatchingForSelector:@selector(executeContextMenuScript:)];
-    [self.browser->dispatcher()
+    [self.dispatcher
         stopDispatchingForSelector:@selector(openContextMenuImage:)];
   }
 }