Move DOMSelection.[cpp/h] from core/page to core/editing

Source/core/editing/DOMSelection.h

Index: Source/core/editing/DOMSelection.h
diff --git a/Source/core/page/DOMSelection.h b/Source/core/editing/DOMSelection.h
similarity index 98%
rename from Source/core/page/DOMSelection.h
rename to Source/core/editing/DOMSelection.h
index f0514e17e2d98df37353a9cc8f08003f82062c92..4274d5e9c9e6ecfd732ea91071925f5f9373cb5c 100644
--- a/Source/core/page/DOMSelection.h
+++ b/Source/core/editing/DOMSelection.h
@@ -57,12 +57,11 @@ public:
 
     void clearTreeScope();
 
-    // FIXME: Reorder API functions according to Selection.idl.
     // Safari Selection Object API
     // These methods return the valid equivalents of internal editing positions.
     Node* baseNode() const;
-    Node* extentNode() const;
     int baseOffset() const;
+    Node* extentNode() const;
     int extentOffset() const;
     String type() const;
     void setBaseAndExtent(Node* baseNode, int baseOffset, Node* extentNode, int extentOffset, ExceptionState&);