Yield HTMLDocumentParser after executing parser blocking script

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 34627dcc7fe3a88700b86dd4fc261341fb42d116..898e0648d3dc7d8e6eed49214ef47da99df08b67 100644
--- a/third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.cpp
+++ b/third_party/WebKit/Source/core/html/parser/HTMLDocumentParser.cpp
@@ -937,7 +937,11 @@ void HTMLDocumentParser::resumeParsingAfterScriptExecution()
     if (m_haveBackgroundParser) {
         validateSpeculations(std::move(m_lastChunkBeforeScript));
         ASSERT(!m_lastChunkBeforeScript);
-        pumpPendingSpeculations();
+        if (true || RuntimeEnabledFeatures::yieldAfterScriptExecutionEnabled()) {
+            m_parserScheduler->scheduleForResume();
+        } else {
+            pumpPendingSpeculations();
+        }
         return;
     }