Widget::ShouldUseNativeFrame is now meaningful on Linux.

chrome/browser/ui/views/toolbar/toolbar_view.h

 // Copyright 2013 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_VIEWS_TOOLBAR_TOOLBAR_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_TOOLBAR_TOOLBAR_VIEW_H_
 
 #include <set>
 #include <string>
 
@@ skipping 166 matching lines @@
 
   // Returns true if we should show the background page badge.
   bool ShouldShowBackgroundPageBadge();
 
   // Returns true if we should show the warning for incompatible software.
   bool ShouldShowIncompatibilityWarning();
 
   // Returns the number of pixels above the location bar in non-normal display.
   int PopupTopSpacing() const;
 
+  // Returns true on Windows if the Glass styling is being used.
+  // This implies that the tab strip overlaps a native window frame.
+  bool UsingWindowsGlass() const;
+
   // Loads the images for all the child views.
   void LoadImages();
 
   bool is_display_mode_normal() const {
     return display_mode_ == DISPLAYMODE_NORMAL;
   }
 
   // Shows the critical notification bubble against the wrench menu.
   void ShowCriticalNotification();
 
@@ skipping 35 matching lines @@
 
   // A list of listeners to call when the menu opens.
   ObserverList<views::MenuListener> menu_listeners_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(ToolbarView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TOOLBAR_TOOLBAR_VIEW_H_