mash: improves browser frame decorations

chrome/browser/ui/views/frame/browser_non_client_frame_view_mus.h

 // Copyright 2015 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_FRAME_BROWSER_NON_CLIENT_FRAME_VIEW_MUS_H_
 #define CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_NON_CLIENT_FRAME_VIEW_MUS_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 80 matching lines @@
   // Returns true if there is anything to paint. Some fullscreen windows do not
   // need their frames painted.
   bool ShouldPaint() const;
 
   void PaintToolbarBackground(gfx::Canvas* canvas);
 
   // Draws the line under the header for windows without a toolbar and not using
   // the packaged app header style.
   void PaintContentEdge(gfx::Canvas* canvas);
 
+  // Returns the height for the header (non-client frame area).
+  int GetHeaderHeight() const;
+
   // TODO(sky): Figure out how to support WebAppLeftHeaderView.
 
   // For popups, the window icon.
   TabIconView* window_icon_;
 
 #if !defined(OS_CHROMEOS)
   // Wrapper around the in-frame avatar switcher.
   AvatarButtonManager profile_switcher_;
 #endif
 
   TabStrip* tab_strip_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserNonClientFrameViewMus);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_NON_CLIENT_FRAME_VIEW_MUS_H_