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

Source/core/editing/Editor.h

Index: Source/core/editing/Editor.h
diff --git a/Source/core/editing/Editor.h b/Source/core/editing/Editor.h
index 60cd39882693cb25c41d6844828420e6ae501064..6c266d5e80afec77252bd05198d7e582c734459d 100644
--- a/Source/core/editing/Editor.h
+++ b/Source/core/editing/Editor.h
@@ -227,8 +227,8 @@ public:
     bool canRedo();
     void redo();
 
-    void didBeginEditing();
-    void didEndEditing();
+    void didBeginEditing(Element*);
+    void didEndEditing(Element*);
 
     void setBaseWritingDirection(WritingDirection);
 
@@ -313,6 +313,7 @@ public:
     bool markedTextMatchesAreHighlighted() const;
     void setMarkedTextMatchesAreHighlighted(bool);
 
+    void textAreaDidBeginEditing(Element*);
     void textFieldDidBeginEditing(Element*);
     void textFieldDidEndEditing(Element*);
     void textDidChangeInTextField(Element*);