[Mac] Move UI item validation to UserInterfaceItemCommandHandler.

chrome/browser/ui/cocoa/browser_window_controller.h

 // Copyright (c) 2012 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 CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_CONTROLLER_H_
 #define CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_CONTROLLER_H_
 
 // A class acting as the Objective-C controller for the Browser
 // object. Handles interactions between Cocoa and the cross-platform
 // code. Each window has a single toolbar and, by virtue of being a
@@ skipping 40 matching lines @@
 @class TranslateBubbleController;
 
 namespace content {
 class WebContents;
 }
 
 namespace extensions {
 class Command;
 }
 
-@interface BrowserWindowController :
-  TabWindowController<NSUserInterfaceValidations,
-                      BookmarkBarControllerDelegate,
-                      ViewResizer,
-                      TabStripControllerDelegate> {
+@interface BrowserWindowController
+    : TabWindowController<BookmarkBarControllerDelegate,
+                          ViewResizer,
+                          TabStripControllerDelegate> {
  @private
   // The ordering of these members is important as it determines the order in
   // which they are destroyed. |browser_| needs to be destroyed last as most of
   // the other objects hold weak references to it or things it owns
   // (tab/toolbar/bookmark models, profiles, etc).
   scoped_ptr<Browser> browser_;
   NSWindow* savedRegularWindow_;
   scoped_ptr<BrowserWindowCocoa> windowShim_;
   base::scoped_nsobject<ToolbarController> toolbarController_;
   base::scoped_nsobject<TabStripController> tabStripController_;
@@ skipping 532 matching lines @@
 - (ExclusiveAccessBubbleWindowController*)exclusiveAccessBubbleWindowController;
 
 // Gets the rect, in window base coordinates, that the omnibox popup should be
 // positioned relative to.
 - (NSRect)omniboxPopupAnchorRect;
 
 @end  // @interface BrowserWindowController (TestingAPI)
 
 
 #endif  // CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_CONTROLLER_H_