Remove the compile time flag for DATALIST Element.

Source/core/rendering/RenderThemeChromiumSkia.cpp

 /*
  * Copyright (C) 2007 Apple Inc.
  * Copyright (C) 2007 Alp Toker <alp@atoker.com>
  * Copyright (C) 2008 Collabora Ltd.
  * Copyright (C) 2008, 2009 Google Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 62 matching lines @@
 {
 }
 
 RenderThemeChromiumSkia::~RenderThemeChromiumSkia()
 {
 }
 
 // Use the Windows style sheets to match their metrics.
 String RenderThemeChromiumSkia::extraDefaultStyleSheet()
 {
-    return String(themeWinUserAgentStyleSheet, sizeof(themeWinUserAgentStyleSheet)) +
-           String(themeChromiumSkiaUserAgentStyleSheet, sizeof(themeChromiumSkiaUserAgentStyleSheet)) +
-           String(themeChromiumUserAgentStyleSheet, sizeof(themeChromiumUserAgentStyleSheet));
+    return RenderTheme::extraDefaultStyleSheet() +
+        String(themeWinUserAgentStyleSheet, sizeof(themeWinUserAgentStyleSheet)) +
+        String(themeChromiumSkiaUserAgentStyleSheet, sizeof(themeChromiumSkiaUserAgentStyleSheet)) +
+        String(themeChromiumUserAgentStyleSheet, sizeof(themeChromiumUserAgentStyleSheet));
 }
 
 String RenderThemeChromiumSkia::extraQuirksStyleSheet()
 {
     return String(themeWinQuirksUserAgentStyleSheet, sizeof(themeWinQuirksUserAgentStyleSheet));
 }
 
 String RenderThemeChromiumSkia::extraMediaControlsStyleSheet()
 {
     return String(mediaControlsChromiumUserAgentStyleSheet, sizeof(mediaControlsChromiumUserAgentStyleSheet));
@@ skipping 407 matching lines @@
 }
 
 RenderThemeChromiumSkia::DirectionFlippingScope::~DirectionFlippingScope()
 {
     if (!m_needsFlipping)
         return;
     m_paintInfo.context->restore();
 }
 
 } // namespace WebCore