1 files changed, 10 insertions, 0 deletions
diff --git a/Source/WebCore/html/parser/HTMLParserScheduler.cpp b/Source/WebCore/html/parser/HTMLParserScheduler.cpp
index c4525c8..393c4be 100644
--- a/Source/WebCore/html/parser/HTMLParserScheduler.cpp
+++ b/Source/WebCore/html/parser/HTMLParserScheduler.cpp
@@ -86,6 +86,16 @@ void HTMLParserScheduler::continueNextChunkTimerFired(Timer<HTMLParserScheduler>
     m_parser->resumeParsingAfterYield();
 }
 
+void HTMLParserScheduler::checkForYieldBeforeScript(PumpSession& session)
+{
+    // If we've never painted before and a layout is pending, yield prior to running
+    // scripts to give the page a chance to paint earlier.
+    Document* document = m_parser->document();
+    bool needsFirstPaint = document->view() && !document->view()->hasEverPainted();
+    if (needsFirstPaint && document->isLayoutTimerActive())
+        session.needsYield = true;
+}
+
 void HTMLParserScheduler::scheduleForResume()
 {
     m_continueNextChunkTimer.startOneShot(0);