Remove some unused code

Source/core/css/StyleSheetContents.h

Index: Source/core/css/StyleSheetContents.h
diff --git a/Source/core/css/StyleSheetContents.h b/Source/core/css/StyleSheetContents.h
index c07f12fe20e982bac1ab4f7ae5d64473a89fe1fd..f3251cdfabd970dc3d83cbe7659421bd8b9ec5ff 100644
--- a/Source/core/css/StyleSheetContents.h
+++ b/Source/core/css/StyleSheetContents.h
@@ -87,8 +87,6 @@ public:
     bool loadCompleted() const;
     bool hasFailedOrCanceledSubresources() const;
 
-    KURL completeURL(const String& url) const;
-
     void setHasSyntacticallyValidCSSHeader(bool isValidCss);
     bool hasSyntacticallyValidCSSHeader() const { return m_hasSyntacticallyValidCSSHeader; }
 
@@ -154,7 +152,6 @@ public:
 
     bool didLoadErrorOccur() const { return m_didLoadErrorOccur; }
 
-    void shrinkToFit();
     RuleSet& ruleSet() { ASSERT(m_ruleSet); return *m_ruleSet.get(); }
     RuleSet& ensureRuleSet(const MediaQueryEvaluator&, AddRuleFlags);
     void clearRuleSet();