Move AlreadySpellCheckedFlag from NodeFlags to ElementFlags

third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.cpp

Index: third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.cpp
diff --git a/third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.cpp b/third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.cpp
index b78667604cdfe88b1c4cefe335c77913223d2153..6b1e6d16cf91d174b624de377d6669f5a8bea859 100644
--- a/third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.cpp
+++ b/third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.cpp
@@ -167,8 +167,10 @@ void SpellChecker::toggleSpellCheckingEnabled() {
     if (!frame->isLocalFrame())
       continue;
     for (Node& node :
-         NodeTraversal::startsAt(toLocalFrame(frame)->document()->rootNode()))
-      node.setAlreadySpellChecked(false);
+         NodeTraversal::startsAt(toLocalFrame(frame)->document()->rootNode())) {
+      if (node.isElementNode())
+        toElement(node).setAlreadySpellChecked(false);
+    }
   }
 }