Rewrite references to "wtf/" to "platform/wtf/" in core/paint.

third_party/WebKit/Source/core/paint/GridPainter.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef GridPainter_h
 #define GridPainter_h
 
-#include "wtf/Allocator.h"
+#include "platform/wtf/Allocator.h"
 
 namespace blink {
 
 struct PaintInfo;
 class LayoutPoint;
 class LayoutGrid;
 
 class GridPainter {
   STACK_ALLOCATED();
 
  public:
   GridPainter(const LayoutGrid& layout_grid) : layout_grid_(layout_grid) {}
 
   void PaintChildren(const PaintInfo&, const LayoutPoint&);
 
  private:
   const LayoutGrid& layout_grid_;
 };
 
 }  // namespace blink
 
 #endif  // GridPainter_h