[ios] Adds a CommandDispatcher to Browser.

ios/clean/chrome/browser/ui/commands/command_dispatcher.h

Index: ios/clean/chrome/browser/ui/commands/command_dispatcher.h
diff --git a/ios/clean/chrome/browser/ui/commands/command_dispatcher.h b/ios/clean/chrome/browser/ui/commands/command_dispatcher.h
deleted file mode 100644
index 0f7cdcf6583214e753eeccbf4692665785aed0f4..0000000000000000000000000000000000000000
--- a/ios/clean/chrome/browser/ui/commands/command_dispatcher.h
+++ /dev/null
@@ -1,24 +0,0 @@
-// 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.
-
-#ifndef IOS_CLEAN_CHROME_BROWSER_UI_COMMANDS_COMMAND_DISPATCHER_H_
-#define IOS_CLEAN_CHROME_BROWSER_UI_COMMANDS_COMMAND_DISPATCHER_H_
-
-#import <Foundation/Foundation.h>
-
-// CommandDispatcher allows coordinators to register as command handlers for
-// specific selectors.  Other objects can call these methods on the dispatcher,
-// which in turn will forward the call to the registered handler.
-@interface CommandDispatcher : NSObject
-
-// Registers the given |target| to receive forwarded messages for the given
-// |selector|.
-- (void)startDispatchingToTarget:(id)target forSelector:(SEL)selector;
-
-// Removes all forwarding registrations for the given |target|.
-- (void)stopDispatchingToTarget:(id)target;
-
-@end
-
-#endif  // IOS_CLEAN_CHROME_BROWSER_UI_COMMANDS_COMMAND_DISPATCHER_H_