Moved transport_adapter.h/.cc from call/ to video/ dir to remove circular dependency

webrtc/call/transport_adapter.cc

-/*
- *  Copyright (c) 2013 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.
- */
-
-#include "webrtc/call/transport_adapter.h"
-
-#include "webrtc/base/checks.h"
-
-namespace webrtc {
-namespace internal {
-
-TransportAdapter::TransportAdapter(Transport* transport)
-    : transport_(transport), enabled_(0) {
-  RTC_DCHECK(nullptr != transport);
-}
-
-bool TransportAdapter::SendRtp(const uint8_t* packet,
-                               size_t length,
-                               const PacketOptions& options) {
-  if (enabled_.Value() == 0)
-    return false;
-
-  return transport_->SendRtp(packet, length, options);
-}
-
-bool TransportAdapter::SendRtcp(const uint8_t* packet, size_t length) {
-  if (enabled_.Value() == 0)
-    return false;
-
-  return transport_->SendRtcp(packet, length);
-}
-
-void TransportAdapter::Enable() {
-  // If this exchange fails it means enabled_ was already true, no need to
-  // check result and iterate.
-  enabled_.CompareExchange(1, 0);
-}
-
-void TransportAdapter::Disable() { enabled_.CompareExchange(0, 1); }
-
-}  // namespace internal
-}  // namespace webrtc