Upstream Chrome on iOS source code [3/11].

ios/chrome/browser/ui/bookmarks/bookmark_promo_controller.h

+// Copyright 2014 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_CHROME_BROWSER_UI_BOOKMARKS_BOOKMARK_PROMO_CONTROLLER_H_
+#define IOS_CHROME_BROWSER_UI_BOOKMARKS_BOOKMARK_PROMO_CONTROLLER_H_
+
+#import <UIKit/UIKit.h>
+
+namespace ios {
+class ChromeBrowserState;
+}  // namespace ios
+
+namespace user_prefs {
+class PrefRegistrySyncable;
+}  // namespace user_prefs
+
+@protocol BookmarkPromoControllerDelegate
+
+// Controls the state of the promo.
+- (void)promoStateChanged:(BOOL)promoEnabled;
+
+@end
+
+// This controller manages the display of the promo cell through its delegate
+// and handles displaying the sign-in view controller.
+@interface BookmarkPromoController : NSObject
+
+@property(nonatomic, assign) id<BookmarkPromoControllerDelegate> delegate;
+
+// Holds the current state of the promo. When the promo state change, it will
+// call the promoStateChanged: selector on the delegate.
+@property(nonatomic, assign) BOOL promoState;
+
+// Registers the feature preferences.
++ (void)registerBrowserStatePrefs:(user_prefs::PrefRegistrySyncable*)registry;
+
+- (instancetype)initWithBrowserState:(ios::ChromeBrowserState*)browserState
+                            delegate:
+                                (id<BookmarkPromoControllerDelegate>)delegate;
+
+// Presents the sign-in UI.
+- (void)showSignIn;
+
+// Hides the promo cell. It won't be presented again on this profile.
+- (void)hidePromoCell;
+
+// Updates the promo state based on the sign-in state of the user.
+- (void)updatePromoState;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_UI_BOOKMARKS_BOOKMARK_PROMO_CONTROLLER_H_