Preload tokens even if a <meta> csp tag is found

third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.h

Index: third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.h
diff --git a/third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.h b/third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.h
index 84a12b1b2b83237923cff750cd9b0edfbdbaec63..97724a4a86a98bdd18af9328e13e2e2872b97031 100644
--- a/third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.h
+++ b/third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.h
@@ -113,6 +113,9 @@ public:
         bool startingScript;
         // Indices into |tokens|.
         Vector<int> likelyDocumentWriteScriptIndices;
+        // Raw pointer into the last <meta> csp tag in |tokens|. Preloads will
+        // be deferred until this token is parsed.
+        CompactHTMLToken* pendingCSPMetaTag;

[kouhei (in TOK), 2016/08/19 04:56:15]

Let's use index as in "likelyDocumentWriteScriptIndices"

[Charlie Harrison, 2016/08/19 12:33:33]

SGTM but we'll have to pull the pointer out when the chunk reaches the main
thread, unless we have some complicated logic to index into m_speculations.

[kouhei (in TOK), 2016/08/22 05:34:03]

I'm thinking of keeping a defer counter on the main thread side. Let me try that
in a separate CL.

[Charlie Harrison, 2016/08/22 14:08:05]

Do you mean a followup? I'd be happy to implement this in the current CL if
you'd like.

[kouhei (in TOK), 2016/08/23 02:18:39]

I mean a follow up. I'm not sure if its really possible (esp with conservative
check where last token wins), so let not that block you.

     };
     void notifyPendingTokenizedChunks();
     void didReceiveEncodingDataFromBackgroundParser(const DocumentEncodingData&);
@@ -186,7 +189,8 @@ private:
 
     std::unique_ptr<HTMLPreloadScanner> createPreloadScanner();
 
-    int preloadInsertion(const SegmentedString& source);
+    void fetchQueuedPreloads();
+
     void evaluateAndPreloadScriptForDocumentWrite(const String& source);
 
     // Temporary enum for the ParseHTMLOnMainThread experiment. This is used to
@@ -235,6 +239,8 @@ private:
     RefPtr<TokenizedChunkQueue> m_tokenizedChunkQueue;
     std::unique_ptr<DocumentWriteEvaluator> m_evaluator;
 
+    CompactHTMLToken* m_pendingCSPMetaTag;
+
     bool m_shouldUseThreading;
     bool m_endWasDelayed;
     bool m_haveBackgroundParser;