Do not block painting for in-body CSS

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

Index: third_party/WebKit/Source/core/dom/Document.h
diff --git a/third_party/WebKit/Source/core/dom/Document.h b/third_party/WebKit/Source/core/dom/Document.h
index e9cdc2002e5e577364c64a182eca2c9b2aef14aa..673206c4cc4040c56dd7120d4880aa66d1d1bdbe 100644
--- a/third_party/WebKit/Source/core/dom/Document.h
+++ b/third_party/WebKit/Source/core/dom/Document.h
@@ -373,8 +373,8 @@ public:
 
     bool sawElementsInKnownNamespaces() const { return m_sawElementsInKnownNamespaces; }
 
-    bool isRenderingReady() const { return haveImportsLoaded() && haveStylesheetsLoaded(); }
-    bool isScriptExecutionReady() const { return isRenderingReady(); }
+    bool isRenderingReady() const { return haveImportsLoaded() && haveRenderBlockingStylesheetsLoaded(); }
+    bool isScriptExecutionReady() const { return haveImportsLoaded() && haveStylesheetsLoaded(); }
 
     // This is a DOM function.
     StyleSheetList& styleSheets();
@@ -1156,6 +1156,7 @@ private:
     void clearFocusedElementTimerFired(Timer<Document>*);
 
     bool haveStylesheetsLoaded() const;
+    bool haveRenderBlockingStylesheetsLoaded() const;
     void styleResolverMayHaveChanged();
 
     void setHoverNode(Node*);