Spell check whole content of an editable element when it gets focused.

Source/core/dom/Node.h

Index: Source/core/dom/Node.h
diff --git a/Source/core/dom/Node.h b/Source/core/dom/Node.h
index f442a593044ca9e53e0bb0a5be131327210effeb..f8cde165010bb3705f0a662c66226c1663490acd 100644
--- a/Source/core/dom/Node.h
+++ b/Source/core/dom/Node.h
@@ -713,6 +713,9 @@ public:
 
     PassRefPtr<NodeList> getDestinationInsertionPoints();
 
+    void setAlreadySpellChecked(bool flag) { setFlag(flag, AlreadySpellCheckedFlag); }
+    bool isAlreadySpellChecked() { return getFlag(AlreadySpellCheckedFlag); }
+
 private:
     enum NodeFlags {
         IsTextFlag = 1,
@@ -754,6 +757,7 @@ private:
         CustomElementWaitingForUpgradeOrIsUpgraded = 1 << 28,
 
         ChildNeedsDistributionRecalc = 1 << 29,
+        AlreadySpellCheckedFlag = 1 << 30,
 
         DefaultNodeFlags = IsParsingChildrenFinishedFlag
     };