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

Source/core/css/MediaQueryEvaluator.cpp

 /*
  * CSS Media Query Evaluator
  *
  * Copyright (C) 2006 Kimmo Kinnunen <kimmo.t.kinnunen@nokia.com>.
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Intel Corporation. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ skipping 19 matching lines @@
 #include "config.h"
 #include "core/css/MediaQueryEvaluator.h"
 
 #include "core/CSSValueKeywords.h"
 #include "core/MediaFeatureNames.h"
 #include "core/MediaFeatures.h"
 #include "core/MediaTypeNames.h"
 #include "core/css/CSSHelper.h"
 #include "core/css/CSSPrimitiveValue.h"
 #include "core/css/CSSToLengthConversionData.h"
+#include "core/css/DisplayModeProperties.h"
 #include "core/css/MediaList.h"
 #include "core/css/MediaQuery.h"
 #include "core/css/MediaValuesDynamic.h"
 #include "core/css/PointerProperties.h"
 #include "core/css/resolver/MediaQueryResult.h"
 #include "core/dom/NodeRenderStyle.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/Settings.h"
@@ skipping 163 matching lines @@
         if (value.isValid()) {
             float number;
             return numberValue(value, number) && compareValue(0, static_cast<int>(number), op);
         }
         return false;
     }
 
     return colorMediaFeatureEval(value, op, mediaValues);
 }
 
+static bool displayModeMediaFeatureEval(const MediaQueryExpValue& value, MediaFeaturePrefix, const MediaValues& mediaValues)
+{
+    if (!value.isID)
+        return false;
+
+    DisplayMode mode = mediaValues.displayMode();
+    switch (value.id) {
+    case CSSValueFullscreen:
+        return mode == DisplayModeFullscreen;
+    case CSSValueStandalone:
+        return mode == DisplayModeStandalone;
+    case CSSValueMinimalUi:
+        return mode == DisplayModeMinimalUi;
+    case CSSValueBrowser:
+        return mode == DisplayModeBrowser;
+    default:
+        ASSERT_NOT_REACHED();
+        return false;
+    }
+}
+
 static bool orientationMediaFeatureEval(const MediaQueryExpValue& value, MediaFeaturePrefix, const MediaValues& mediaValues)
 {
     int width = mediaValues.viewportWidth();
     int height = mediaValues.viewportHeight();
 
     if (value.isID) {
         if (width > height) // Square viewport is portrait.
             return CSSValueLandscape == value.id;
         return CSSValuePortrait == value.id;
     }
@@ skipping 407 matching lines @@
     // Call the media feature evaluation function. Assume no prefix and let
     // trampoline functions override the prefix if prefix is used.
     EvalFunc func = gFunctionMap->get(expr->mediaFeature().impl());
     if (func)
         return func(expr->expValue(), NoPrefix, *m_mediaValues);
 
     return false;
 }
 
 } // namespace