[WIP] Streaming CSS parser

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

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/css/parser/CSSLazyPropertyParserImpl.h"
 
 #include "core/css/parser/CSSLazyParsingState.h"
 #include "core/css/parser/CSSParserImpl.h"
 
 namespace blink {
 
-CSSLazyPropertyParserImpl::CSSLazyPropertyParserImpl(CSSParserTokenRange block,
+CSSLazyPropertyParserImpl::CSSLazyPropertyParserImpl(size_t startOffset,
                                                      CSSLazyParsingState* state)
-    : CSSLazyPropertyParser(), m_lazyState(state) {
-  // Reserve capacity to minimize heap bloat.
-  size_t length = block.end() - block.begin();
-  m_tokens.reserveCapacity(length);
-  m_tokens.append(block.begin(), length);
-}
+    : CSSLazyPropertyParser(), m_startOffset(startOffset), m_lazyState(state) {}
 
 StylePropertySet* CSSLazyPropertyParserImpl::parseProperties() {
   m_lazyState->countRuleParsed();
   return CSSParserImpl::parseDeclarationListForLazyStyle(
-      m_tokens, m_lazyState->context());
+      m_lazyState->sheetText(), m_startOffset, m_lazyState->context());
 }
 
 }  // namespace blink