Move viewport unit resolution to style recalc time

Source/core/css/resolver/StyleResolver.h

Index: Source/core/css/resolver/StyleResolver.h
diff --git a/Source/core/css/resolver/StyleResolver.h b/Source/core/css/resolver/StyleResolver.h
index 5f88ef75c97fa7cd9b84153a683c1e908bc9eba5..5bf6cd0baccd2eec8278ca15bba7e810b13b2b23 100644
--- a/Source/core/css/resolver/StyleResolver.h
+++ b/Source/core/css/resolver/StyleResolver.h
@@ -191,7 +191,7 @@ public:
     void addMediaQueryResults(const MediaQueryResultList&);
     MediaQueryResultList* viewportDependentMediaQueryResults() { return &m_viewportDependentMediaQueryResults; }
     bool hasViewportDependentMediaQueries() const { return !m_viewportDependentMediaQueryResults.isEmpty(); }
-    bool affectedByViewportChange() const;
+    bool mediaQueryAffectedByViewportChange() const;
 
     // FIXME: Regions should not require special logic in StyleResolver.
     bool checkRegionStyle(Element* regionElement);
@@ -199,6 +199,8 @@ public:
     // FIXME: Rename to reflect the purpose, like didChangeFontSize or something.
     void invalidateMatchedPropertiesCache();
 
+    void notifyResizeForViewportUnits();
+
     // Exposed for RenderStyle::isStyleAvilable().
     static RenderStyle* styleNotYetAvailable() { return s_styleNotYetAvailable; }