Enables hot-tracking for overflow extension buttons in the app menu

ui/native_theme/common_theme.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 UI_NATIVE_THEME_COMMON_THEME_H_
 #define UI_NATIVE_THEME_COMMON_THEME_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "ui/native_theme/native_theme.h"
 
@@ skipping 27 matching lines @@
 
 void NATIVE_THEME_EXPORT CommonThemePaintMenuGutter(SkCanvas* canvas,
                                                     const gfx::Rect& rect);
 
 void NATIVE_THEME_EXPORT CommonThemePaintMenuBackground(SkCanvas* canvas,
                                                         const gfx::Rect& rect);
 
 void NATIVE_THEME_EXPORT CommonThemePaintMenuItemBackground(
     SkCanvas* canvas,
     NativeTheme::State state,
-    const gfx::Rect& rect);
+    const gfx::Rect& rect,
+    const NativeTheme::MenuItemExtraParams& menu_item);
 
 // Creates a gfx::Canvas wrapping an SkCanvas.
 scoped_ptr<gfx::Canvas> NATIVE_THEME_EXPORT CommonThemeCreateCanvas(
     SkCanvas* sk_canvas);
 
 }  // namespace ui
 
 #endif  // UI_NATIVE_THEME_COMMON_THEME_H_