[LazyParseCSS] WIP Implement token discarding

third_party/WebKit/Source/core/css/parser/CSSLazyPropertyParserImpl.h

Index: third_party/WebKit/Source/core/css/parser/CSSLazyPropertyParserImpl.h
diff --git a/third_party/WebKit/Source/core/css/parser/CSSLazyPropertyParserImpl.h b/third_party/WebKit/Source/core/css/parser/CSSLazyPropertyParserImpl.h
index 1a190199c5955e0529300fe482f9923a154c26ad..c150cbf8103661a973470b14dbf818076b5a55a1 100644
--- a/third_party/WebKit/Source/core/css/parser/CSSLazyPropertyParserImpl.h
+++ b/third_party/WebKit/Source/core/css/parser/CSSLazyPropertyParserImpl.h
@@ -18,17 +18,24 @@ class CSSLazyParsingState;
 class CSSLazyPropertyParserImpl : public CSSLazyPropertyParser {
  public:
   CSSLazyPropertyParserImpl(CSSParserTokenRange block, CSSLazyParsingState*);
+  ~CSSLazyPropertyParserImpl();
 
   // CSSLazyPropertyParser:
   StylePropertySet* parseProperties() override;
 
+  void discardTokensIfPossible();
+
   DEFINE_INLINE_TRACE() {
     visitor->trace(m_lazyState);
     CSSLazyPropertyParser::trace(visitor);
   }
 
  private:
+  StylePropertySet* retokenizeAndParseProperties();
+
+  // TODO(csharrison): Can this be packed a bit tighter?
   Vector<CSSParserToken> m_tokens;
+  StringView m_tokenView;
   Member<CSSLazyParsingState> m_lazyState;
 };