Revert of BackgroundHTMLParser: Introduce ParsedChunkQueue to pass ParsedChunks to main thread

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

Index: third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.cpp
diff --git a/third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.cpp b/third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.cpp
index 9b90b6de24f9d77ad71e1bc82165d304489cfb34..80f5c230a6944b5491b1c1372e8246f6ea88a9bc 100644
--- a/third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.cpp
+++ b/third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.cpp
@@ -149,7 +149,6 @@
     , m_xssAuditorDelegate(&document)
     , m_weakFactory(this)
     , m_preloader(HTMLResourcePreloader::create(document))
-    , m_parsedChunkQueue(ParsedChunkQueue::create())
     , m_shouldUseThreading(syncPolicy == AllowAsynchronousParsing)
     , m_endWasDelayed(false)
     , m_haveBackgroundParser(false)
@@ -356,13 +355,9 @@
     return true;
 }
 
-void HTMLDocumentParser::notifyPendingParsedChunks()
-{
-    TRACE_EVENT0("blink", "HTMLDocumentParser::notifyPendingParsedChunks");
-    ASSERT(m_parsedChunkQueue);
-
-    Vector<OwnPtr<ParsedChunk>> pendingChunks;
-    m_parsedChunkQueue->takeAll(pendingChunks);
+void HTMLDocumentParser::didReceiveParsedChunkFromBackgroundParser(PassOwnPtr<ParsedChunk> chunk)
+{
+    TRACE_EVENT0("blink", "HTMLDocumentParser::didReceiveParsedChunkFromBackgroundParser");
 
     if (!isParsing())
         return;
@@ -371,21 +366,17 @@
     // We suspend preload until HTMLHTMLElement is inserted and
     // ApplicationCache is initialized.
     if (!document()->documentElement()) {
-        for (auto& chunk : pendingChunks) {
-            for (auto& request : chunk->preloads)
-                m_queuedPreloads.append(request.release());
-        }
+        for (auto& request : chunk->preloads)
+            m_queuedPreloads.append(request.release());
     } else {
         // We can safely assume that there are no queued preloads request after
         // the document element is available, as we empty the queue immediately
         // after the document element is created in pumpPendingSpeculations().
         ASSERT(m_queuedPreloads.isEmpty());
-        for (auto& chunk : pendingChunks)
-            m_preloader->takeAndPreload(chunk->preloads);
-    }
-
-    for (auto& chunk : pendingChunks)
-        m_speculations.append(chunk.release());
+        m_preloader->takeAndPreload(chunk->preloads);
+    }
+
+    m_speculations.append(chunk);
 
     if (!isWaitingForScripts() && !isScheduledForResume()) {
         if (m_tasksWereSuspended)
@@ -803,7 +794,6 @@
     config->xssAuditor->init(document(), &m_xssAuditorDelegate);
     config->preloadScanner = adoptPtr(new TokenPreloadScanner(document()->url().copy(), CachedDocumentParameters::create(document())));
     config->decoder = takeDecoder();
-    config->parsedChunkQueue = m_parsedChunkQueue.get();
     if (document()->settings()) {
         if (document()->settings()->backgroundHtmlParserOutstandingTokenLimit())
             config->outstandingTokenLimit = document()->settings()->backgroundHtmlParserOutstandingTokenLimit();