Issue #1587 - Part 6: Move FetchController/Signal to its own dir

Since it is specced separately from fetch.

dom/fetch/FetchController.h

@@ -1,73 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set ts=8 sts=2 et sw=2 tw=80: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#ifndef mozilla_dom_FetchController_h
-#define mozilla_dom_FetchController_h
-
-#include "mozilla/dom/BindingDeclarations.h"
-#include "mozilla/dom/FetchSignal.h" 
-#include "nsCycleCollectionParticipant.h"
-#include "nsWrapperCache.h"
-#include "mozilla/ErrorResult.h"
-#include "nsIGlobalObject.h"
-
-namespace mozilla {
-namespace dom {
-
-class FetchController final : public nsISupports
-                            , public nsWrapperCache
-                            , public FetchSignal::Follower
-{
-public:
-  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
-  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(FetchController)
-
-  static bool
-  IsEnabled(JSContext* aCx, JSObject* aGlobal);
-
-  static already_AddRefed<FetchController>
-  Constructor(const GlobalObject& aGlobal, ErrorResult& aRv);
-
-  explicit FetchController(nsIGlobalObject* aGlobal);
-
-  JSObject*
-  WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
-
-  nsIGlobalObject*
-  GetParentObject() const;
-
-  FetchSignal*
-  Signal();
-
-  void
-  Abort();
-
-  void
-  Follow(FetchSignal& aSignal);
-
-  void
-  Unfollow(FetchSignal& aSignal);
-
-  FetchSignal*
-  Following() const;
-
-  // FetchSignal::Follower
-
-  void Aborted() override;
-
-private:
-  ~FetchController() = default;
-
-  nsCOMPtr<nsIGlobalObject> mGlobal;
-  RefPtr<FetchSignal> mSignal;
-
-  bool mAborted;
-};
-
-} // dom namespace
-} // mozilla namespace
-
-#endif // mozilla_dom_FetchController_h