Remove some unused code

Source/core/css/StyleSheetContents.cpp

Index: Source/core/css/StyleSheetContents.cpp
diff --git a/Source/core/css/StyleSheetContents.cpp b/Source/core/css/StyleSheetContents.cpp
index 5a6e6f281cec86fd9b88108e690fbf1a1c6cf501..15645ca03bc56ba980ac53b040ba1eb1881a005a 100644
--- a/Source/core/css/StyleSheetContents.cpp
+++ b/Source/core/css/StyleSheetContents.cpp
@@ -424,12 +424,6 @@ Document* StyleSheetContents::singleOwnerDocument() const
     return root->clientSingleOwnerDocument();
 }
 
-KURL StyleSheetContents::completeURL(const String& url) const
-{
-    // FIXME: This is only OK when we have a singleOwnerNode, right?
-    return m_parserContext.completeURL(url);
-}
-
 static bool childRulesHaveFailedOrCanceledSubresources(const WillBeHeapVector<RefPtrWillBeMember<StyleRuleBase>>& rules)
 {
     for (unsigned i = 0; i < rules.size(); ++i) {
@@ -550,12 +544,6 @@ void StyleSheetContents::removedFromMemoryCache()
     m_isInMemoryCache = false;
 }
 
-void StyleSheetContents::shrinkToFit()
-{
-    m_importRules.shrinkToFit();
-    m_childRules.shrinkToFit();
-}
-
 RuleSet& StyleSheetContents::ensureRuleSet(const MediaQueryEvaluator& medium, AddRuleFlags addRuleFlags)
 {
     if (!m_ruleSet) {