Upstream Chrome on iOS source code [6/11].

ios/chrome/browser/ui/ntp/whats_new_header_view.h

+// Copyright 2015 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_NTP_WHATS_NEW_HEADER_VIEW_H_
+#define IOS_CHROME_BROWSER_UI_NTP_WHATS_NEW_HEADER_VIEW_H_
+
+#import <UIKit/UIKit.h>
+
+#import "ios/chrome/browser/ui/ntp/notification_promo_whats_new.h"
+#include "ios/public/provider/chrome/browser/images/whats_new_icon.h"
+
+@protocol WhatsNewHeaderViewDelegate<NSObject>
+
+- (void)onPromoLabelTapped;
+
+@end
+
+@interface WhatsNewHeaderView : UICollectionReusableView
+
+@property(nonatomic, assign) id<WhatsNewHeaderViewDelegate> delegate;
+
+// Sets the text for the attributed label.
+- (void)setText:(NSString*)text;
+
+// Sets the icon of the view.
+- (void)setIcon:(WhatsNewIcon)icon;
+
+// Sets the value to use for the left and right margin.
+- (void)setSideMargin:(CGFloat)sideMargin;
+
+// Returns the minimum height required for WhatsNewHeaderView to fit in |width|,
+// for a given |text|.
++ (int)heightToFitText:(NSString*)text inWidth:(CGFloat)width;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_UI_NTP_WHATS_NEW_HEADER_VIEW_H_