Move the user agent styles sheets to blink_resources.grd (Part 3)

Source/core/rendering/RenderThemeChromiumLinux.cpp

 // Copyright 2014 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.
 
 #include "config.h"
 #include "core/rendering/RenderThemeChromiumLinux.h"
 
-#include "core/UserAgentStyleSheets.h"
+#include "platform/PlatformResourceLoader.h"
 
 namespace blink {
 
 PassRefPtr<RenderTheme> RenderThemeChromiumLinux::create()
 {
     return adoptRef(new RenderThemeChromiumLinux());
 }
 
 RenderTheme& RenderTheme::theme()
 {
     DEFINE_STATIC_REF(RenderTheme, renderTheme, (RenderThemeChromiumLinux::create()));
     return *renderTheme;
 }
 
 String RenderThemeChromiumLinux::extraDefaultStyleSheet()
 {
     return RenderThemeChromiumDefault::extraDefaultStyleSheet() +
-        String(themeChromiumLinuxCss, sizeof(themeChromiumLinuxCss));
+        loadResourceAsASCIIString("themeChromiumLinux.css");
 }
 
 } // namespace blink