[ios clean] Move dispatcher out of Browser.

ios/clean/chrome/browser/ui/find_in_page/find_in_page_coordinator.mm

Index: ios/clean/chrome/browser/ui/find_in_page/find_in_page_coordinator.mm
diff --git a/ios/clean/chrome/browser/ui/find_in_page/find_in_page_coordinator.mm b/ios/clean/chrome/browser/ui/find_in_page/find_in_page_coordinator.mm
index 14acfc1c919cead1c6c09a6e0930a443bfe5d944..eae5ec2ee170e4f88c2db49192f126aeabd9a219 100644
--- a/ios/clean/chrome/browser/ui/find_in_page/find_in_page_coordinator.mm
+++ b/ios/clean/chrome/browser/ui/find_in_page/find_in_page_coordinator.mm
@@ -40,33 +40,31 @@
   DCHECK(self.browser);
 
   // Register command handlers with the dispatcher.
-  CommandDispatcher* dispatcher = self.browser->dispatcher();
-  [dispatcher startDispatchingToTarget:self
-                           forSelector:@selector(showFindInPage)];
-  [dispatcher startDispatchingToTarget:self
-                           forSelector:@selector(hideFindInPage)];
+  [self.dispatcher startDispatchingToTarget:self
+                                forSelector:@selector(showFindInPage)];
+  [self.dispatcher startDispatchingToTarget:self
+                                forSelector:@selector(hideFindInPage)];
 
   self.mediator = [[FindInPageMediator alloc]
       initWithWebStateList:(&self.browser->web_state_list())provider:self
-                dispatcher:static_cast<id>(dispatcher)];
-  [dispatcher startDispatchingToTarget:self.mediator
-                           forSelector:@selector(findStringInPage:)];
-  [dispatcher startDispatchingToTarget:self.mediator
-                           forSelector:@selector(findNextInPage)];
-  [dispatcher startDispatchingToTarget:self.mediator
-                           forSelector:@selector(findPreviousInPage)];
+                dispatcher:self.callableDispatcher];
+  [self.dispatcher startDispatchingToTarget:self.mediator
+                                forSelector:@selector(findStringInPage:)];
+  [self.dispatcher startDispatchingToTarget:self.mediator
+                                forSelector:@selector(findNextInPage)];
+  [self.dispatcher startDispatchingToTarget:self.mediator
+                                forSelector:@selector(findPreviousInPage)];
 }
 
 - (void)willBeRemovedFromParentCoordinator {
-  CommandDispatcher* dispatcher = self.browser->dispatcher();
-  [dispatcher stopDispatchingToTarget:self];
-  [dispatcher stopDispatchingToTarget:self.mediator];
+  [self.dispatcher stopDispatchingToTarget:self];
+  [self.dispatcher stopDispatchingToTarget:self.mediator];
   self.mediator = nil;
 }
 
 - (void)start {
   self.viewController = [[FindInPageViewController alloc] init];
-  self.viewController.dispatcher = static_cast<id>(self.browser->dispatcher());
+  self.viewController.dispatcher = self.callableDispatcher;
   [super start];
 }