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

third_party/WebKit/Source/core/layout/LayoutTestHelper.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 LayoutTestHelper_h
 #define LayoutTestHelper_h
 
 #include <gtest/gtest.h>
 #include <memory>
 
 #include "core/dom/Document.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalFrameClient.h"
 #include "core/frame/Settings.h"
 #include "core/html/HTMLElement.h"
 #include "core/layout/api/LayoutAPIShim.h"
 #include "core/layout/api/LayoutViewItem.h"
 #include "core/loader/EmptyClients.h"
 #include "core/testing/DummyPageHolder.h"
-#include "wtf/Allocator.h"
+#include "platform/wtf/Allocator.h"
 
 namespace blink {
 
 class SingleChildLocalFrameClient final : public EmptyLocalFrameClient {
  public:
   static SingleChildLocalFrameClient* Create() {
     return new SingleChildLocalFrameClient();
   }
 
   DEFINE_INLINE_VIRTUAL_TRACE() {
@@ skipping 87 matching lines @@
   void LoadAhem();
 
  private:
   Persistent<LocalFrameClient> local_frame_client_;
   std::unique_ptr<DummyPageHolder> page_holder_;
 };
 
 }  // namespace blink
 
 #endif  // LayoutTestHelper_h