Do not block painting for in-body CSS

third_party/WebKit/Source/core/dom/Document.cpp

Index: third_party/WebKit/Source/core/dom/Document.cpp
diff --git a/third_party/WebKit/Source/core/dom/Document.cpp b/third_party/WebKit/Source/core/dom/Document.cpp
index fec9e73e24613e85511cf57c333d15fee770a13b..ca2a90e19217082b68f6e8b8d71b404e40560d79 100644
--- a/third_party/WebKit/Source/core/dom/Document.cpp
+++ b/third_party/WebKit/Source/core/dom/Document.cpp
@@ -3071,7 +3071,7 @@ void Document::didLoadAllScriptBlockingResources()
 
 void Document::executeScriptsWaitingForResources()
 {
-    if (!isRenderingReady())
+    if (!isScriptExecutionReady())
         return;
     if (ScriptableDocumentParser* parser = scriptableDocumentParser())
         parser->executeScriptsWaitingForResources();
@@ -5677,6 +5677,13 @@ bool Document::haveStylesheetsLoaded() const
     return m_styleEngine->haveStylesheetsLoaded();
 }
 
+bool Document::haveRenderBlockingStylesheetsLoaded() const
+{
+    if (RuntimeEnabledFeatures::cssInBodyDoesNotBlockPaintEnabled())
+        return m_styleEngine->haveRenderBlockingStylesheetsLoaded();
+    return m_styleEngine->haveStylesheetsLoaded();
+}
+
 Locale& Document::getCachedLocale(const AtomicString& locale)
 {
     AtomicString localeKey = locale;