(3) Rename files to snake_case: move the files

Mechanically generated with this command:

tools_webrtc/do-rename.sh move all-renames.txt

Bug: webrtc:10159
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Change-Id: I8b05b6eab9b9d18b29c2199bbea239e9add1e690
Reviewed-on: https://webrtc-review.googlesource.com/c/115481
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26225}

api/turncustomizer.h

@@ -1,45 +0,0 @@
-/*
- *  Copyright 2017 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.
- */
-
-#ifndef API_TURNCUSTOMIZER_H_
-#define API_TURNCUSTOMIZER_H_
-
-#include <stdlib.h>
-
-namespace cricket {
-class PortInterface;
-class StunMessage;
-}  // namespace cricket
-
-namespace webrtc {
-
-class TurnCustomizer {
- public:
-  // This is called before a TURN message is sent.
-  // This could be used to add implementation specific attributes to a request.
-  virtual void MaybeModifyOutgoingStunMessage(
-      cricket::PortInterface* port,
-      cricket::StunMessage* message) = 0;
-
-  // TURN can send data using channel data messages or Send indication.
-  // This method should return false if |data| should be sent using
-  // a Send indication instead of a ChannelData message, even if a
-  // channel is bound.
-  virtual bool AllowChannelData(cricket::PortInterface* port,
-                                const void* data,
-                                size_t size,
-                                bool payload) = 0;
-
-  virtual ~TurnCustomizer() {}
-};
-
-}  // namespace webrtc
-
-#endif  // API_TURNCUSTOMIZER_H_