Move blink platform's JSON code into a directory.

third_party/WebKit/Source/core/svg/SVGParsingError.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 "core/svg/SVGParsingError.h"
 
 #include "core/dom/QualifiedName.h"
-#include "platform/JSONValues.h"
+#include "platform/json/JSONValues.h"
 #include "wtf/text/CharacterNames.h"
 #include "wtf/text/StringBuilder.h"
 
 #include <utility>
 
 namespace blink {
 
 namespace {
 
 void appendErrorContextInfo(StringBuilder& builder, const String& tagName, const QualifiedName& name)
@@ skipping 95 matching lines @@
         builder.append("Unexpected end of attribute. ");
 
     auto message = messageForStatus(status());
     builder.append(message.first);
     appendValue(builder, *this, value);
     builder.append(message.second);
     return builder.toString();
 }
 
 } // namespace blink