Move RtpExtension to api/ directory and config.h/.cc to call/.

webrtc/call/rtp_config.cc

Index: webrtc/call/rtp_config.cc
diff --git a/webrtc/call/rtp_config.cc b/webrtc/call/rtp_config.cc
new file mode 100644
index 0000000000000000000000000000000000000000..dc3ea217ceaf48700065b610e9ae276810da7af1
--- /dev/null
+++ b/webrtc/call/rtp_config.cc
@@ -0,0 +1,38 @@
+/*
+ *  Copyright (c) 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.
+ */
+
+#include "webrtc/call/rtp_config.h"
+
+#include <sstream>
+
+namespace webrtc {
+
+std::string NackConfig::ToString() const {
+  std::stringstream ss;
+  ss << "{rtp_history_ms: " << rtp_history_ms;
+  ss << '}';
+  return ss.str();
+}
+
+std::string UlpfecConfig::ToString() const {
+  std::stringstream ss;
+  ss << "{ulpfec_payload_type: " << ulpfec_payload_type;
+  ss << ", red_payload_type: " << red_payload_type;
+  ss << ", red_rtx_payload_type: " << red_rtx_payload_type;
+  ss << '}';
+  return ss.str();
+}
+
+bool UlpfecConfig::operator==(const UlpfecConfig& other) const {
+  return ulpfec_payload_type == other.ulpfec_payload_type &&
+         red_payload_type == other.red_payload_type &&
+         red_rtx_payload_type == other.red_rtx_payload_type;
+}
+}  // namespace webrtc