[ios clean] Move dispatcher out of Browser.

ios/shared/chrome/browser/ui/coordinators/browser_coordinator.mm

Index: ios/shared/chrome/browser/ui/coordinators/browser_coordinator.mm
diff --git a/ios/shared/chrome/browser/ui/coordinators/browser_coordinator.mm b/ios/shared/chrome/browser/ui/coordinators/browser_coordinator.mm
index 2917b4237b808a2ad82137c13726f5cae6fe5f7a..86545997ecb2cfd7c472c26bda3017d01bb7a575 100644
--- a/ios/shared/chrome/browser/ui/coordinators/browser_coordinator.mm
+++ b/ios/shared/chrome/browser/ui/coordinators/browser_coordinator.mm
@@ -5,6 +5,8 @@
 #import "ios/shared/chrome/browser/ui/coordinators/browser_coordinator.h"
 
 #import "base/logging.h"
+#import "ios/shared/chrome/browser/ui/browser_list/browser.h"
+#import "ios/shared/chrome/browser/ui/commands/command_dispatcher.h"
 #import "ios/shared/chrome/browser/ui/coordinators/browser_coordinator+internal.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
@@ -24,6 +26,7 @@
 @implementation BrowserCoordinator
 
 @synthesize browser = _browser;
+@synthesize dispatcher = _dispatcher;
 @synthesize childCoordinators = _childCoordinators;
 @synthesize parentCoordinator = _parentCoordinator;
 @synthesize started = _started;
@@ -38,6 +41,10 @@
 
 #pragma mark - Public API
 
+- (id)callableDispatcher {
+  return static_cast<id>(self.dispatcher);
+}
+
 - (void)start {
   if (self.started) {
     return;
@@ -80,6 +87,7 @@
   [self.childCoordinators addObject:childCoordinator];
   childCoordinator.parentCoordinator = self;
   childCoordinator.browser = self.browser;
+  childCoordinator.dispatcher = self.dispatcher;
   [childCoordinator wasAddedToParentCoordinator:self];
 }