StyleResolver should update RuleSets lazily.

Source/core/css/RuleSet.h

Index: Source/core/css/RuleSet.h
diff --git a/Source/core/css/RuleSet.h b/Source/core/css/RuleSet.h
index 988ad24060aad5551d923e1abb07e472d8fb7b48..260b4980d341e33600e2f7f90a75db52322650ef 100644
--- a/Source/core/css/RuleSet.h
+++ b/Source/core/css/RuleSet.h
@@ -36,6 +36,7 @@ enum AddRuleFlags {
     RuleHasDocumentSecurityOrigin = 1,
     RuleCanUseFastCheckSelector   = 1 << 1,
     RuleIsInRegionRule            = 1 << 2,
+    ViewportRuleIsProcessed       = 1 << 3
 };
 
 enum PropertyWhitelistType {
@@ -109,9 +110,10 @@ class RuleSet {
 public:
     static PassOwnPtr<RuleSet> create() { return adoptPtr(new RuleSet); }
 
-    void addRulesFromSheet(StyleSheetContents*, const MediaQueryEvaluator&, StyleResolver* = 0, const ContainerNode* = 0);
+    void addRulesFromSheet(StyleSheetContents*, const MediaQueryEvaluator&, StyleResolver* = 0, const ContainerNode* = 0, bool viewportRuleIsProcessed = false);

[dglazkov, 2013/11/13 16:29:22]

Let's avoid bools as params. Enums are teh cool.

[tasak, 2013/11/14 11:25:46]

Done.

     void addStyleRule(StyleRule*, AddRuleFlags);
     void addRule(StyleRule*, unsigned selectorIndex, AddRuleFlags);
+    void addViewportRule(StyleRuleViewport*);
 
     const RuleFeatureSet& features() const { return m_features; }
 
@@ -159,7 +161,6 @@ private:
 
     void addToRuleSet(StringImpl* key, PendingRuleMap&, const RuleData&);
     void addPageRule(StyleRulePage*);
-    void addViewportRule(StyleRuleViewport*);
     void addFontFaceRule(StyleRuleFontFace*);
     void addKeyframesRule(StyleRuleKeyframes*);
     void addHostRule(StyleRuleHost*);