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

third_party/WebKit/Source/core/paint/BlockFlowPainter.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 BlockFlowPainter_h
 #define BlockFlowPainter_h
 
-#include "wtf/Allocator.h"
+#include "platform/wtf/Allocator.h"
 
 namespace blink {
 
 class LayoutPoint;
 struct PaintInfo;
 class LayoutBlockFlow;
 
 class BlockFlowPainter {
   STACK_ALLOCATED();
 
  public:
   BlockFlowPainter(const LayoutBlockFlow& layout_block_flow)
       : layout_block_flow_(layout_block_flow) {}
   void PaintContents(const PaintInfo&, const LayoutPoint&);
   void PaintFloats(const PaintInfo&, const LayoutPoint&);
 
  private:
   const LayoutBlockFlow& layout_block_flow_;
 };
 
 }  // namespace blink
 
 #endif  // BlockFlowPainter_h