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

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

Index: third_party/WebKit/Source/core/html/parser/BackgroundHTMLParser.cpp
diff --git a/third_party/WebKit/Source/core/html/parser/BackgroundHTMLParser.cpp b/third_party/WebKit/Source/core/html/parser/BackgroundHTMLParser.cpp
index 74f0f30bdb5f048b0135cdf23e15c268375587c6..8d08984b220477899accd7d6207abfca35eaf9f4 100644
--- a/third_party/WebKit/Source/core/html/parser/BackgroundHTMLParser.cpp
+++ b/third_party/WebKit/Source/core/html/parser/BackgroundHTMLParser.cpp
@@ -107,7 +107,6 @@
     , m_preloadScanner(config->preloadScanner.release())
     , m_decoder(config->decoder.release())
     , m_loadingTaskRunner(loadingTaskRunner)
-    , m_parsedChunkQueue(config->parsedChunkQueue)
     , m_startingScript(false)
 {
     ASSERT(m_outstandingTokenLimit > 0);
@@ -178,7 +177,6 @@
     m_input.rewindTo(checkpoint->inputCheckpoint, checkpoint->unparsedInput);
     m_preloadScanner->rewindTo(checkpoint->preloadScannerCheckpoint);
     m_startingScript = false;
-    m_parsedChunkQueue->clear();
     pumpTokenizer();
 }
 
@@ -293,12 +291,9 @@
     chunk->startingScript = m_startingScript;
     m_startingScript = false;
 
-    bool isEmpty = m_parsedChunkQueue->enqueue(chunk.release());
-    if (isEmpty) {
-        m_loadingTaskRunner->postTask(
-            BLINK_FROM_HERE,
-            new Task(threadSafeBind(&HTMLDocumentParser::notifyPendingParsedChunks, AllowCrossThreadAccess(m_parser))));
-    }
+    m_loadingTaskRunner->postTask(
+        BLINK_FROM_HERE,
+        new Task(threadSafeBind(&HTMLDocumentParser::didReceiveParsedChunkFromBackgroundParser, AllowCrossThreadAccess(m_parser), chunk.release())));
 
     m_pendingTokens = adoptPtr(new CompactHTMLTokenStream);
 }