Remove remains of webrtc/base

webrtc/base/flags.h

-/*
- *  Copyright 2006 The WebRTC Project Authors. All rights reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-
-// Originally comes from shared/commandlineflags/flags.h
-
-// Flags are defined and declared using DEFINE_xxx and DECLARE_xxx macros,
-// where xxx is the flag type. Flags are referred to via FLAG_yyy,
-// where yyy is the flag name. For intialization and iteration of flags,
-// see the FlagList class. For full programmatic access to any
-// flag, see the Flag class.
-//
-// The implementation only relies and basic C++ functionality
-// and needs no special library or STL support.
-
-#ifndef WEBRTC_BASE_FLAGS_H_
-#define WEBRTC_BASE_FLAGS_H_
-
-
-// This header is deprecated and is just left here temporarily during
-// refactoring. See https://bugs.webrtc.org/7634 for more details.
-#include "webrtc/rtc_base/flags.h"
-
-#endif  // SHARED_COMMANDLINEFLAGS_FLAGS_H_