[Mac] Touch Bar Support for Dialogs

ui/base/cocoa/touch_bar_util.h

+// 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 UI_BASE_COCOA_TOUCH_BAR_UTIL_H
+#define UI_BASE_COCOA_TOUCH_BAR_UTIL_H
+
+#import <Cocoa/Cocoa.h>
+
+#include "ui/base/ui_base_export.h"
+
+namespace ui {
+
+// Returns the NSTouchBar Class.
+UI_BASE_EXPORT Class NSTouchBar();
+
+// Returns the NSCustomTouchBarItem Class.
+UI_BASE_EXPORT Class NSCustomTouchBarItem();
+
+// Returns a stylized blue button for the touch bar. The button performs
+// |action| from the |target|.
+UI_BASE_EXPORT NSButton* GetBlueTouchBarButton(NSString* title,
+                                               id target,
+                                               SEL action);
+
+// Creates a touch bar identifier with the given |id|.
+UI_BASE_EXPORT NSString* GetTouchBarId(NSString* touch_bar_id);
+
+// Creates a touch Bar jtem identifier.
+UI_BASE_EXPORT NSString* GetTouchBarItemId(NSString* touch_bar_id,
+                                           NSString* item_id);
+
+}  // namespace ui
+
+#endif  // UI_BASE_COCOA_TOUCH_BAR_UTIL_H