Move Fetch API releted code to modules/fetch.

Source/modules/serviceworkers/Headers.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 Headers_h
-#define Headers_h
-
-#include "bindings/core/v8/ScriptState.h"
-#include "bindings/core/v8/ScriptWrappable.h"
-#include "modules/serviceworkers/FetchHeaderList.h"
-#include "wtf/Forward.h"
-#include "wtf/PassOwnPtr.h"
-
-namespace blink {
-
-class Dictionary;
-class ExceptionState;
-class Iterator;
-
-// http://fetch.spec.whatwg.org/#headers-class
-class Headers final : public GarbageCollected<Headers>, public ScriptWrappable {
-    DEFINE_WRAPPERTYPEINFO();
-public:
-    enum Guard { ImmutableGuard, RequestGuard, RequestNoCORSGuard, ResponseGuard, NoneGuard };
-
-    static Headers* create();
-    static Headers* create(ExceptionState&);
-    static Headers* create(const Headers*, ExceptionState&);
-    static Headers* create(const Vector<Vector<String> >&, ExceptionState&);
-    static Headers* create(const Dictionary&, ExceptionState&);
-
-    // Shares the FetchHeaderList. Called when creating a Request or Response.
-    static Headers* create(FetchHeaderList*);
-
-    Headers* createCopy() const;
-
-    // Headers.idl implementation.
-    void append(const String& name, const String& value, ExceptionState&);
-    void remove(const String& key, ExceptionState&);
-    String get(const String& key, ExceptionState&);
-    Vector<String> getAll(const String& key, ExceptionState&);
-    bool has(const String& key, ExceptionState&);
-    void set(const String& key, const String& value, ExceptionState&);
-
-    // Iterable
-    Iterator* iterator(ScriptState*, ExceptionState&);
-
-    void setGuard(Guard guard) { m_guard = guard; }
-    Guard guard() const { return m_guard; }
-
-    // These methods should only be called when size() would return 0.
-    void fillWith(const Headers*, ExceptionState&);
-    void fillWith(const Vector<Vector<String> >&, ExceptionState&);
-    void fillWith(const Dictionary&, ExceptionState&);
-
-    FetchHeaderList* headerList() const { return m_headerList; }
-    void trace(Visitor*);
-
-private:
-    Headers();
-    // Shares the FetchHeaderList. Called when creating a Request or Response.
-    explicit Headers(FetchHeaderList*);
-
-    Member<FetchHeaderList> m_headerList;
-    Guard m_guard;
-};
-
-} // namespace blink
-
-#endif // Headers_h