[Clean Skeleton] Migrate code to clean/

ios/chrome/browser/browser_coordinator.h

-// Copyright 2016 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.
-
-// ======                        New Architecture                         =====
-// =         This code is only used in the new iOS Chrome architecture.       =
-// ============================================================================
-
-#ifndef IOS_CHROME_BROWSER_BROWSER_COORDINATOR_H_
-#define IOS_CHROME_BROWSER_BROWSER_COORDINATOR_H_
-
-#import <UIKit/UIKit.h>
-
-namespace ios {
-class ChromeBrowserState;
-}
-
-// An object that manages a UI component via a view controller.
-// This is the public interface to this class; subclasses should also import
-// the Internal category header (browser_coordinator+internal.h). This header
-// file declares all the methods and properties a subclass must either override,
-// call, or reset.
-@interface BrowserCoordinator : NSObject
-
-// The browser state used by this coordinator and passed into any child
-// coordinators added to it. This is a weak pointer, and setting this property
-// doesn't transfer ownership of the browser state.
-@property(nonatomic, assign) ios::ChromeBrowserState* browserState;
-
-// The view controller that this coordinator will use to present its content, if
-// it is presenting content. This is not the view controller created and managed
-// by this coordinator; it should be supplied by whatever object is creating
-// this coordinator.
-@property(nonatomic, weak) UIViewController* rootViewController;
-
-// The basic lifecycle methods for coordinators are -start and -stop. These
-// are blank template methods; child classes are expected to implement them and
-// do not need to invoke the superclass methods.
-// Starts the user interaction managed by the receiver. Typical implementations
-// will create a view controller and then use |rootViewController| to present
-// it.
-- (void)start;
-
-// Stops the user interaction managed by the receiver. Called on dealloc.
-- (void)stop;
-
-@end
-
-#endif  // IOS_CHROME_BROWSER_BROWSER_COORDINATOR_H_