Make it possible to modify background HTML parser token limits.

Source/core/html/parser/HTMLDocumentParser.cpp

Index: Source/core/html/parser/HTMLDocumentParser.cpp
diff --git a/Source/core/html/parser/HTMLDocumentParser.cpp b/Source/core/html/parser/HTMLDocumentParser.cpp
index 5fa1975ebf40a4a712dd6115436d7b06cfd5caf2..ce6ec0737feeb2e2080f5fc592afe2b7a1b22135 100644
--- a/Source/core/html/parser/HTMLDocumentParser.cpp
+++ b/Source/core/html/parser/HTMLDocumentParser.cpp
@@ -783,6 +783,12 @@ void HTMLDocumentParser::startBackgroundParser()
     config->xssAuditor->init(document(), &m_xssAuditorDelegate);
     config->preloadScanner = adoptPtr(new TokenPreloadScanner(document()->url().copy(), CachedDocumentParameters::create(document())));
     config->decoder = takeDecoder();
+    if (document()->settings()) {
+        if (document()->settings()->backgroundHtmlParserOutstandingTokenLimit())
+            config->outstandingTokenLimit = document()->settings()->backgroundHtmlParserOutstandingTokenLimit();
+        if (document()->settings()->backgroundHtmlParserPendingTokenLimit())
+            config->pendingTokenLimit = document()->settings()->backgroundHtmlParserPendingTokenLimit();
+    }
 
     ASSERT(config->xssAuditor->isSafeToSendToAnotherThread());
     ASSERT(config->preloadScanner->isSafeToSendToAnotherThread());