[ios clean] Adds ToolsMenu to Showcase.

ios/clean/chrome/browser/ui/tools/menu_view_controller.mm

 // 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.
 
 #import "ios/clean/chrome/browser/ui/tools/menu_view_controller.h"
 
 #include "base/i18n/rtl.h"
 #import "base/logging.h"
 #import "base/mac/foundation_util.h"
 #import "base/macros.h"
@@ skipping 219 matching lines @@
         constraintEqualToAnchor:self.menuScrollView.bottomAnchor],
     [self.menuStackView.topAnchor
         constraintEqualToAnchor:self.menuScrollView.topAnchor],
     [self.menuStackView.widthAnchor
         constraintEqualToAnchor:self.menuScrollView.widthAnchor],
     [self.menuStackView.heightAnchor
         constraintEqualToConstant:kMenuItemHeight * self.menuItems.count],
     // CloseMenu Button Constraint.
     [self.closeMenuButton.trailingAnchor
         constraintEqualToAnchor:self.view.trailingAnchor],
+    [self.closeMenuButton.topAnchor

[sczs, 2017/06/16 20:46:34]

Missing constraint that Showcase helped me notice :P  

[lpromero, 2017/06/19 09:38:49]

Awesome!

+        constraintEqualToAnchor:self.menuScrollView.topAnchor],
   ]];
 }
 
 #pragma mark - Tools Consumer
 
 - (void)setToolsMenuItems:(NSArray*)menuItems {
   _menuItems = menuItems;
 }
 
 - (void)displayOverflowControls:(BOOL)displayOverflowControls {
   self.displayOverflowControls = displayOverflowControls;
 }
 
 - (void)setIsLoading:(BOOL)isLoading {
   self.currentPageLoading = isLoading;
 }
 
 - (void)setCurrentPageLoading:(BOOL)currentPageLoading {
   _currentPageLoading = currentPageLoading;
   // If the OverflowButtons have been initialized update their visibility.
   if (self.toolbarOverflowStackView) {
     self.toolbarOverflowStackView.reloadButton.hidden = currentPageLoading;
     self.toolbarOverflowStackView.stopButton.hidden = !currentPageLoading;
   }
 }
 
 @end