Rewrite references to "wtf/" to "platform/wtf/" in platform/exported.

third_party/WebKit/Source/platform/exported/InterfaceRegistry.cpp

 // Copyright 2016 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.
 
 #include "public/platform/InterfaceRegistry.h"
 
-#include "wtf/StdLibExtras.h"
+#include "platform/wtf/StdLibExtras.h"
 
 namespace blink {
 namespace {
 
 class EmptyInterfaceRegistry : public InterfaceRegistry {
   void addInterface(const char* name,
                     const InterfaceFactory& factory) override {}
 };
 
 }  // namespace
 
 InterfaceRegistry* InterfaceRegistry::getEmptyInterfaceRegistry() {
   DEFINE_STATIC_LOCAL(EmptyInterfaceRegistry, emptyInterfaceRegistry, ());
   return &emptyInterfaceRegistry;
 }
 
 }  // namespace blink