Add <meta viewport> support to the preloader

Source/core/css/MediaValuesCached.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/css/MediaValuesCached.h"
 
 #include "core/css/CSSPrimitiveValue.h"
 #include "core/dom/Document.h"
 #include "core/frame/LocalFrame.h"
@@ skipping 159 matching lines @@
 Document* MediaValuesCached::document() const
 {
     return 0;
 }
 
 bool MediaValuesCached::hasValues() const
 {
     return true;
 }
 
+void MediaValuesCached::setViewportWidth(int width)
+{
+    m_data.viewportWidth = width;
+}
+
+void MediaValuesCached::setViewportHeight(int height)
+{
+    m_data.viewportHeight = height;
+}
+
 } // namespace