Lazy Parse CSS

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 9019a488b6e602c1214e6d476efe8b6fe70d4620..b37343ed7b4a78a378243ed92a62bf10b8477626 100644
--- a/third_party/WebKit/Source/core/css/StylePropertySet.h
+++ b/third_party/WebKit/Source/core/css/StylePropertySet.h
@@ -155,6 +155,18 @@ class CORE_EXPORT StylePropertySet
   friend class PropertySetCSSStyleDeclaration;
 };
 
+// Used for lazily parsing properties.
+class CSSLazyPropertyParser
+    : public GarbageCollectedFinalized<CSSLazyPropertyParser> {
+  WTF_MAKE_NONCOPYABLE(CSSLazyPropertyParser);
+
+ public:
+  CSSLazyPropertyParser() {}
+  virtual ~CSSLazyPropertyParser() {}
+  virtual StylePropertySet* parseProperties() = 0;
+  DECLARE_VIRTUAL_TRACE();
+};
+
 class CORE_EXPORT ImmutableStylePropertySet : public StylePropertySet {
  public:
   ~ImmutableStylePropertySet();