[ios clean] Add overflow buttons for ToolsMenu.

ios/clean/chrome/browser/ui/tools/menu_overflow_controls_stackview.h

Index: ios/clean/chrome/browser/ui/tools/menu_overflow_controls_stackview.h
diff --git a/ios/clean/chrome/browser/ui/tools/menu_overflow_controls_stackview.h b/ios/clean/chrome/browser/ui/tools/menu_overflow_controls_stackview.h
new file mode 100644
index 0000000000000000000000000000000000000000..7f442a1c617a73f50e397f357f315c71ebb8e07e
--- /dev/null
+++ b/ios/clean/chrome/browser/ui/tools/menu_overflow_controls_stackview.h
@@ -0,0 +1,25 @@
+// 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 IOS_CLEAN_CHROME_BROWSER_UI_TOOLS_MENU_OVERFLOW_CONTROLS_STACKVIEW_H_
+#define IOS_CLEAN_CHROME_BROWSER_UI_TOOLS_MENU_OVERFLOW_CONTROLS_STACKVIEW_H_
+
+#import <UIKit/UIKit.h>
+
+@class ToolbarButton;
+
+// StackView subclass that contains the Overflow Toolbar Buttons that will be
+// inserted in the first row of ToolMenu in compact widths.
+@interface MenuOverflowControlsStackView : UIStackView
+// ToolsMenu ToolbarButton.
+@property(nonatomic, strong) ToolbarButton* toolsMenuButton;
+// Share ToolbarButton.
+@property(nonatomic, strong) ToolbarButton* shareButton;
+// Reload ToolbarButton.
+@property(nonatomic, strong) ToolbarButton* reloadButton;
+// Stop ToolbarButton.
+@property(nonatomic, strong) ToolbarButton* stopButton;
+@end
+
+#endif  // IOS_CLEAN_CHROME_BROWSER_UI_TOOLS_MENU_OVERFLOW_CONTROLS_STACKVIEW_H_