WIP/proof-of-concept to make blink::LinkHeader reuse net:: parsing code

third_party/WebKit/Source/core/loader/LinkHeader.h

-// Copyright 2015 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 LinkHeader_h
-#define LinkHeader_h
-
-#include "core/CoreExport.h"
-#include "core/html/CrossOriginAttribute.h"
-#include "wtf/Allocator.h"
-#include "wtf/text/WTFString.h"
-
-namespace blink {
-
-class LinkHeader {
-    DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();
-public:
-    template <typename CharType>
-    LinkHeader(CharType*& position, CharType* end);
-
-    const String& url() const { return m_url; }
-    const String& rel() const { return m_rel; }
-    const String& as() const { return m_as; }
-    CrossOriginAttributeValue crossOrigin() const { return m_crossOrigin; }
-    bool valid() const { return m_isValid; }
-
-    enum LinkParameterName {
-        LinkParameterRel,
-        LinkParameterAnchor,
-        LinkParameterTitle,
-        LinkParameterMedia,
-        LinkParameterType,
-        LinkParameterRev,
-        LinkParameterHreflang,
-        // Beyond this point, only link-extension parameters
-        LinkParameterUnknown,
-        LinkParameterCrossOrigin,
-        LinkParameterAs,
-    };
-
-private:
-    void setValue(LinkParameterName, String value);
-
-    String m_url;
-    String m_rel;
-    String m_as;
-    CrossOriginAttributeValue m_crossOrigin;
-    bool m_isValid;
-};
-
-class CORE_EXPORT LinkHeaderSet {
-    STACK_ALLOCATED();
-public:
-    LinkHeaderSet(const String& header);
-
-    Vector<LinkHeader>::const_iterator begin() const { return m_headerSet.begin(); }
-    Vector<LinkHeader>::const_iterator end() const { return m_headerSet.end(); }
-    LinkHeader& operator[](size_t i) { return m_headerSet[i]; }
-    size_t size() { return m_headerSet.size(); }
-
-private:
-    template <typename CharType>
-    void init(CharType* headerValue, unsigned len);
-
-    Vector<LinkHeader> m_headerSet;
-};
-
-} // namespace blink
-
-#endif