[Experimental] CSSSerializer Proof-of-concept

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

Index: third_party/WebKit/Source/core/css/StylePropertySet.h
diff --git a/third_party/WebKit/Source/core/css/StylePropertySet.h b/third_party/WebKit/Source/core/css/StylePropertySet.h
index 3f900840e7d0a238ebc156477b16972791734cfb..a9523ebf6ea7e62f88116280498178ed74dd17d0 100644
--- a/third_party/WebKit/Source/core/css/StylePropertySet.h
+++ b/third_party/WebKit/Source/core/css/StylePropertySet.h
@@ -35,7 +35,9 @@
 
 namespace blink {
 
+class CSSDeserializeStream;
 class CSSStyleDeclaration;
+class CSSSerializeStream;
 class ImmutableStylePropertySet;
 class MutableStylePropertySet;
 class StyleSheetContents;
@@ -125,6 +127,8 @@ public:
 
     bool hasFailedOrCanceledSubresources() const;
 
+    void serialize(CSSSerializeStream*) const;
+
     static unsigned averageSizeInBytes();
 
 #ifndef NDEBUG
@@ -163,6 +167,7 @@ class CORE_EXPORT ImmutableStylePropertySet : public StylePropertySet {
 public:
     ~ImmutableStylePropertySet();
     static PassRefPtrWillBeRawPtr<ImmutableStylePropertySet> create(const CSSProperty* properties, unsigned count, CSSParserMode);
+    static PassRefPtrWillBeRawPtr<ImmutableStylePropertySet> deserialize(CSSDeserializeStream*);
 
     unsigned propertyCount() const { return m_arraySize; }
 
@@ -172,6 +177,8 @@ public:
     template<typename T> // CSSPropertyID or AtomicString
     int findPropertyIndex(T property) const;
 
+    void serializeAfterDispatch(CSSSerializeStream*) const;
+
     DECLARE_TRACE_AFTER_DISPATCH();
 
     void* operator new(std::size_t, void* location)
@@ -183,6 +190,7 @@ public:
 
 private:
     ImmutableStylePropertySet(const CSSProperty*, unsigned count, CSSParserMode);
+    ImmutableStylePropertySet(CSSDeserializeStream*, unsigned count, CSSParserMode);
 };
 
 inline const RawPtrWillBeMember<CSSValue>* ImmutableStylePropertySet::valueArray() const