Upstream Chrome on iOS source code [9/11].

ios/chrome/browser/ui/toolbar/toolbar_tools_menu_button.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.
+
+#ifndef IOS_CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_TOOLS_MENU_BUTTON_H_
+#define IOS_CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_TOOLS_MENU_BUTTON_H_
+
+#import <UIKit/UIKit.h>
+
+#import "ios/chrome/browser/ui/fancy_ui/tinted_button.h"
+#import "ios/chrome/browser/ui/toolbar/toolbar_controller.h"
+
+// TintedButton specialization that updates the tint color when the tools menu
+// is visible or when the reading list associated with |readingListModel|
+// contains unread items.
+@interface ToolbarToolsMenuButton : TintedButton
+
+// Initializes and returns a newly allocated TintedButton with the specified
+// |frame| and the |style| of the toolbar it belongs to.
+- (instancetype)initWithFrame:(CGRect)frame
+                        style:(ToolbarControllerStyle)style
+    NS_DESIGNATED_INITIALIZER;
+
+- (instancetype)initWithFrame:(CGRect)frame NS_UNAVAILABLE;
+
+- (instancetype)initWithCoder:(NSCoder*)coder NS_UNAVAILABLE;
+
+// Informs the button that the Tools Menu's visibility is |toolsMenuVisible|.
+- (void)setToolsMenuIsVisible:(BOOL)toolsMenuVisible;
+
+// Notifies the button that the Reading List's unread item count changed.
+- (void)setReadingListContainsUnreadItems:(BOOL)readingListContainsUnreadItems;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_TOOLS_MENU_BUTTON_H_