PurgeMemory.

third_party/WebKit/Source/core/css/StyleRule.h

Index: third_party/WebKit/Source/core/css/StyleRule.h
diff --git a/third_party/WebKit/Source/core/css/StyleRule.h b/third_party/WebKit/Source/core/css/StyleRule.h
index a631def8ef10ff48d9c2a63e066411b150f6c9f0..a37ca69b7a1494e1747fb5a2fde68ea19207f176 100644
--- a/third_party/WebKit/Source/core/css/StyleRule.h
+++ b/third_party/WebKit/Source/core/css/StyleRule.h
@@ -79,6 +79,8 @@ public:
     PassRefPtrWillBeRawPtr<CSSRule> createCSSOMWrapper(CSSStyleSheet* parentSheet = 0) const;
     PassRefPtrWillBeRawPtr<CSSRule> createCSSOMWrapper(CSSRule* parentRule) const;
 
+    void purgeMemory();
+
     DECLARE_TRACE();
     DEFINE_INLINE_TRACE_AFTER_DISPATCH() { }
     void finalizeGarbageCollectedObject();
@@ -120,6 +122,8 @@ public:
 
     PassRefPtrWillBeRawPtr<StyleRule> copy() const { return adoptRefWillBeNoop(new StyleRule(*this)); }
 
+    void purgeMemory();
+
     static unsigned averageSizeInBytes();
 
     DECLARE_TRACE_AFTER_DISPATCH();
@@ -148,6 +152,8 @@ public:
 
     DECLARE_TRACE_AFTER_DISPATCH();
 
+    void purgeMemory();
+
 private:
     StyleRuleFontFace(PassRefPtrWillBeRawPtr<StylePropertySet>);
     StyleRuleFontFace(const StyleRuleFontFace&);
@@ -173,6 +179,8 @@ public:
 
     PassRefPtrWillBeRawPtr<StyleRulePage> copy() const { return adoptRefWillBeNoop(new StyleRulePage(*this)); }
 
+    void purgeMemory();
+
     DECLARE_TRACE_AFTER_DISPATCH();
 
 private:
@@ -192,6 +200,8 @@ public:
 
     DECLARE_TRACE_AFTER_DISPATCH();
 
+    void purgeMemory();
+
 protected:
     StyleRuleGroup(Type, WillBeHeapVector<RefPtrWillBeMember<StyleRuleBase>>& adoptRule);
     StyleRuleGroup(const StyleRuleGroup&);
@@ -211,6 +221,8 @@ public:
 
     PassRefPtrWillBeRawPtr<StyleRuleMedia> copy() const { return adoptRefWillBeNoop(new StyleRuleMedia(*this)); }
 
+    void purgeMemory() { StyleRuleGroup::purgeMemory(); }
+
     DECLARE_TRACE_AFTER_DISPATCH();
 
 private:
@@ -233,6 +245,8 @@ public:
 
     DEFINE_INLINE_TRACE_AFTER_DISPATCH() { StyleRuleGroup::traceAfterDispatch(visitor); }
 
+    void purgeMemory() { StyleRuleGroup::purgeMemory(); }
+
 private:
     StyleRuleSupports(const String& conditionText, bool conditionIsSupported, WillBeHeapVector<RefPtrWillBeMember<StyleRuleBase>>& adoptRules);
     StyleRuleSupports(const StyleRuleSupports&);
@@ -255,6 +269,8 @@ public:
 
     PassRefPtrWillBeRawPtr<StyleRuleViewport> copy() const { return adoptRefWillBeNoop(new StyleRuleViewport(*this)); }
 
+    void purgeMemory();
+
     DECLARE_TRACE_AFTER_DISPATCH();
 
 private:
@@ -271,6 +287,8 @@ public:
     static PassRefPtrWillBeRawPtr<StyleRuleCharset> create() { return adoptRefWillBeNoop(new StyleRuleCharset()); }
     DEFINE_INLINE_TRACE_AFTER_DISPATCH() { StyleRuleBase::traceAfterDispatch(visitor); }
 
+    void purgeMemory() { }
+
 private:
     StyleRuleCharset() : StyleRuleBase(Charset) { }
 };