Move Fetch API releted code to modules/fetch.

Source/modules/serviceworkers/GlobalFetch.cpp

-// 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.
-
-#include "config.h"
-#include "modules/serviceworkers/GlobalFetch.h"
-
-#include "core/dom/ActiveDOMObject.h"
-#include "core/frame/LocalDOMWindow.h"
-#include "core/workers/WorkerGlobalScope.h"
-#include "modules/serviceworkers/FetchManager.h"
-#include "modules/serviceworkers/Request.h"
-#include "platform/Supplementable.h"
-#include "platform/heap/Handle.h"
-#include "wtf/OwnPtr.h"
-
-namespace blink {
-
-namespace {
-
-template <typename T>
-class GlobalFetchImpl final : public NoBaseWillBeGarbageCollectedFinalized<GlobalFetchImpl<T>>, public WillBeHeapSupplement<T> {
-    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(GlobalFetchImpl);
-public:
-    static GlobalFetchImpl& from(T& supplementable, ExecutionContext* executionContext)
-    {
-        GlobalFetchImpl* supplement = static_cast<GlobalFetchImpl*>(WillBeHeapSupplement<T>::from(supplementable, name()));
-        if (!supplement) {
-            supplement = new GlobalFetchImpl(executionContext);
-            WillBeHeapSupplement<T>::provideTo(supplementable, name(), adoptPtrWillBeNoop(supplement));
-        }
-        return *supplement;
-    }
-
-    ScriptPromise fetch(ScriptState* scriptState, const RequestInfo& input, const Dictionary& init, ExceptionState& exceptionState)
-    {
-        if (m_fetchManager.isStopped()) {
-            exceptionState.throwTypeError("The global scope is shutting down.");
-            return ScriptPromise();
-        }
-
-        // "Let |r| be the associated request of the result of invoking the
-        // initial value of Request as constructor with |input| and |init| as
-        // arguments. If this throws an exception, reject |p| with it."
-        Request* r = Request::create(m_stopDetector.executionContext(), input, init, exceptionState);
-        if (exceptionState.hadException())
-            return ScriptPromise();
-        return m_fetchManager.fetch(scriptState, r->request());
-    }
-
-    void trace(Visitor* visitor) override
-    {
-        WillBeHeapSupplement<T>::trace(visitor);
-    }
-
-private:
-    class StopDetector : public ActiveDOMObject {
-    public:
-        StopDetector(ExecutionContext* executionContext, FetchManager* fetchManager)
-            : ActiveDOMObject(executionContext)
-            , m_fetchManager(fetchManager)
-        {
-            suspendIfNeeded();
-        }
-        void stop() override { m_fetchManager->stop(); }
-
-    private:
-        // Having a raw pointer is safe, because |m_fetchManager| is owned by
-        // the owner of this object.
-        FetchManager* m_fetchManager;
-    };
-
-    explicit GlobalFetchImpl(ExecutionContext* executionContext)
-        : m_fetchManager(executionContext)
-        , m_stopDetector(executionContext, &m_fetchManager)
-    {
-    }
-    static const char* name() { return "GlobalFetch"; }
-
-    FetchManager m_fetchManager;
-    StopDetector m_stopDetector;
-};
-
-} // namespace
-
-ScriptPromise GlobalFetch::fetch(ScriptState* scriptState, DOMWindow& window, const RequestInfo& input, const Dictionary& init, ExceptionState& exceptionState)
-{
-    return GlobalFetchImpl<LocalDOMWindow>::from(toLocalDOMWindow(window), window.executionContext()).fetch(scriptState, input, init, exceptionState);
-}
-
-ScriptPromise GlobalFetch::fetch(ScriptState* scriptState, WorkerGlobalScope& worker, const RequestInfo& input, const Dictionary& init, ExceptionState& exceptionState)
-{
-    return GlobalFetchImpl<WorkerGlobalScope>::from(worker, worker.executionContext()).fetch(scriptState, input, init, exceptionState);
-}
-
-} // namespace blink