Move a static member function nodeIsUserSelectNone() out from PositionAlgorithm template class

Source/core/editing/Position.h

Index: Source/core/editing/Position.h
diff --git a/Source/core/editing/Position.h b/Source/core/editing/Position.h
index b953e1c8a073c2ea217aebd0fcd94a2d6c933196..b91a806547fc36566c6470b71ecae9fea0edbc56 100644
--- a/Source/core/editing/Position.h
+++ b/Source/core/editing/Position.h
@@ -200,7 +200,6 @@ public:
     InlineBoxPosition computeInlineBoxPosition(EAffinity, TextDirection primaryDirection) const;
 
     static bool hasRenderedNonAnonymousDescendantsWithHeight(LayoutObject*);
-    static bool nodeIsUserSelectNone(Node*);
     static bool nodeIsUserSelectAll(const Node*);
     static Node* rootUserSelectAllForNode(Node*);
     static PositionAlgorithm<Strategy> beforeNode(Node* anchorNode);
@@ -445,6 +444,8 @@ inline PositionInComposedTree fromPositionInDOMTree<EditingInComposedTreeStrateg
     return toPositionInComposedTree(position);
 }
 
+CORE_EXPORT bool nodeIsUserSelectNone(Node*);

[tkent, 2015/08/19 09:24:04]

Is Position.{h,cpp} the best home of nodeIsUserSelectNone()?
HTMLLabelElement doesn't refer to Position except
Position::nodeIsUserSelectNone(). 
SelectionController::updateSelectionForMouseDownDispatchingSelectStart() doesn't
use Position objects.

[yosin_UTC9, 2015/08/19 09:34:18]

No. Following patch will move it to "EditingUtilities.{cpp,h}".

[tkent, 2015/08/19 09:41:08]

I prefer moving it to EditingUtilities in this CL.

[yosin_UTC9, 2015/08/19 09:59:32]

Done.

+
 } // namespace blink
 
 #ifndef NDEBUG