Add support for 'display-mode' MQ defined in Manifest spec

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 43 matching lines @@
     m_data.devicePixelRatio = calculateDevicePixelRatio(frame);
     m_data.colorBitsPerComponent = calculateColorBitsPerComponent(frame);
     m_data.monochromeBitsPerComponent = calculateMonochromeBitsPerComponent(frame);
     m_data.primaryPointerType = calculatePrimaryPointerType(frame);
     m_data.availablePointerTypes = calculateAvailablePointerTypes(frame);
     m_data.primaryHoverType = calculatePrimaryHoverType(frame);
     m_data.availableHoverTypes = calculateAvailableHoverTypes(frame);
     m_data.defaultFontSize = calculateDefaultFontSize(frame);
     m_data.threeDEnabled = calculateThreeDEnabled(frame);
     m_data.strictMode = calculateStrictMode(frame);
+    m_data.displayMode = calculateDisplayMode(frame);
     const String mediaType = calculateMediaType(frame);
     if (!mediaType.isEmpty())
         m_data.mediaType = mediaType.isolatedCopy();
 }
 
 MediaValuesCached::MediaValuesCached(const MediaValuesCachedData& data)
     : m_data(data)
 {
 }
 
@@ skipping 74 matching lines @@
 
 bool MediaValuesCached::threeDEnabled() const
 {
     return m_data.threeDEnabled;
 }
 
 bool MediaValuesCached::strictMode() const
 {
     return m_data.strictMode;
 }
+
 const String MediaValuesCached::mediaType() const
 {
     return m_data.mediaType;
 }
 
+DisplayMode MediaValuesCached::displayMode() const
+{
+    return m_data.displayMode;
+}
+
 Document* MediaValuesCached::document() const
 {
     return 0;
 }
 
 bool MediaValuesCached::hasValues() const
 {
     return true;
 }
 
 } // namespace