'haveImportsLoaded' shouldn't block rendering, if ignoringPendingStylesheets.

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 8da7b78f561af21297f7ae3cfa0f6f3ece0f0628..3b401e59d79b99247d32492df4e8e539a8e8d9ce 100644
--- a/third_party/WebKit/Source/core/dom/Document.h
+++ b/third_party/WebKit/Source/core/dom/Document.h
@@ -449,9 +449,7 @@ class CORE_EXPORT Document : public ContainerNode,
   }
 
   bool canExecuteScripts(ReasonForCallingCanExecuteScripts) override;
-  bool isRenderingReady() const {
-    return haveImportsLoaded() && haveRenderBlockingStylesheetsLoaded();
-  }
+  bool isRenderingReady() const;
   bool isScriptExecutionReady() const {
     return haveImportsLoaded() && haveScriptBlockingStylesheetsLoaded();
   }