Update Background Fetch IDLs following spec changes

third_party/WebKit/Source/modules/background_fetch/BackgroundFetchRequest.h

Index: third_party/WebKit/Source/modules/background_fetch/BackgroundFetchRequest.h
diff --git a/third_party/WebKit/Source/modules/background_fetch/BackgroundFetchRequest.h b/third_party/WebKit/Source/modules/background_fetch/BackgroundFetchRequest.h
deleted file mode 100644
index 11ef1afa40685596e283a98fee573274df8fd90f..0000000000000000000000000000000000000000
--- a/third_party/WebKit/Source/modules/background_fetch/BackgroundFetchRequest.h
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright 2017 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 BackgroundFetchRequest_h
-#define BackgroundFetchRequest_h
-
-#include "bindings/core/v8/ScriptWrappable.h"
-#include "platform/heap/Handle.h"
-
-namespace blink {
-
-class Request;
-
-// Base interface for providing developers with access to the Request
-// information associated with a background fetch.
-class BackgroundFetchRequest : public GarbageCollected<BackgroundFetchRequest>,
-                               public ScriptWrappable {
-  DEFINE_WRAPPERTYPEINFO();
-
- public:
-  // Web Exposed attribute defined in the IDL file.
-  Request* request() const;
-
-  DECLARE_VIRTUAL_TRACE();
-
- protected:
-  explicit BackgroundFetchRequest(Request*);
-
- private:
-  Member<Request> m_request;
-};
-
-}  // namespace blink
-
-#endif  // BackgroundFetchRequest_h