Don't fail the style assert in Element::rendererIsFocusable if the document is active.

Source/web/WebLocalFrameImpl.cpp

Index: Source/web/WebLocalFrameImpl.cpp
diff --git a/Source/web/WebLocalFrameImpl.cpp b/Source/web/WebLocalFrameImpl.cpp
index 4ed3d84b79ed8cf92ccbfbf500873526525e86f2..01d18004c0dc9520de0f8aeecb6babca82eadc8a 100644
--- a/Source/web/WebLocalFrameImpl.cpp
+++ b/Source/web/WebLocalFrameImpl.cpp
@@ -1692,6 +1692,9 @@ void WebLocalFrameImpl::setFindEndstateFocusAndSelection()
         if (!selection.isNone())
             return;
 
+        // Need to clean out style and layout state before querying Element::isFocusable().
+        frame()->document()->updateLayoutIgnorePendingStylesheets();
+
         // Try to find the first focusable node up the chain, which will, for
         // example, focus links if we have found text within the link.
         Node* node = activeMatch->firstNode();