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

third_party/WebKit/Source/platform/exported/URLConversion.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/URLConversion.h"
 
+#include "platform/wtf/text/StringUTF8Adaptor.h"
+#include "platform/wtf/text/WTFString.h"
 #include "public/platform/WebString.h"
 #include "url/gurl.h"
-#include "wtf/text/StringUTF8Adaptor.h"
-#include "wtf/text/WTFString.h"
 
 namespace blink {
 
 GURL WebStringToGURL(const WebString& webString) {
   if (webString.isEmpty())
     return GURL();
 
   String str = webString;
   if (str.is8Bit()) {
     // Ensure the (possibly Latin-1) 8-bit string is UTF-8 for GURL.
     StringUTF8Adaptor utf8(str);
     return GURL(utf8.asStringPiece());
   }
 
   // GURL can consume UTF-16 directly.
   return GURL(base::StringPiece16(str.characters16(), str.length()));
 }
 
 }  // namespace blink