Add publicly visible mock for RtpTransceiverInterface

Bug: webrtc:11642
Change-Id: Iadcaddecb9e02781e1946c37a72eeb678cd91b5b
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/191822
Commit-Queue: Steve Anton <steveanton@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32564}
diff --git a/api/BUILD.gn b/api/BUILD.gn
index e0c7934..f02c5fd 100644
--- a/api/BUILD.gn
+++ b/api/BUILD.gn
@@ -912,8 +912,10 @@
   }
 
   rtc_source_set("mock_rtp") {
+    visibility = [ "*" ]
     testonly = true
     sources = [
+      "test/mock_rtp_transceiver.h",
       "test/mock_rtpreceiver.h",
       "test/mock_rtpsender.h",
     ]
diff --git a/api/test/compile_all_headers.cc b/api/test/compile_all_headers.cc
index 76cfc39..6f06742 100644
--- a/api/test/compile_all_headers.cc
+++ b/api/test/compile_all_headers.cc
@@ -37,6 +37,7 @@
 #include "api/test/mock_media_stream_interface.h"
 #include "api/test/mock_peer_connection_factory_interface.h"
 #include "api/test/mock_peerconnectioninterface.h"
+#include "api/test/mock_rtp_transceiver.h"
 #include "api/test/mock_rtpreceiver.h"
 #include "api/test/mock_rtpsender.h"
 #include "api/test/mock_transformable_video_frame.h"
diff --git a/api/test/mock_rtp_transceiver.h b/api/test/mock_rtp_transceiver.h
new file mode 100644
index 0000000..a0a08c4
--- /dev/null
+++ b/api/test/mock_rtp_transceiver.h
@@ -0,0 +1,85 @@
+/*
+ *  Copyright 2020 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_TEST_MOCK_RTP_TRANSCEIVER_H_
+#define API_TEST_MOCK_RTP_TRANSCEIVER_H_
+
+#include <string>
+#include <vector>
+
+#include "api/rtp_transceiver_interface.h"
+#include "test/gmock.h"
+
+namespace webrtc {
+
+class MockRtpTransceiver final
+    : public rtc::RefCountedObject<RtpTransceiverInterface> {
+ public:
+  static rtc::scoped_refptr<MockRtpTransceiver> Create() {
+    return new MockRtpTransceiver();
+  }
+
+  MOCK_METHOD(cricket::MediaType, media_type, (), (const, override));
+  MOCK_METHOD(absl::optional<std::string>, mid, (), (const, override));
+  MOCK_METHOD(rtc::scoped_refptr<RtpSenderInterface>,
+              sender,
+              (),
+              (const, override));
+  MOCK_METHOD(rtc::scoped_refptr<RtpReceiverInterface>,
+              receiver,
+              (),
+              (const, override));
+  MOCK_METHOD(bool, stopped, (), (const, override));
+  MOCK_METHOD(bool, stopping, (), (const, override));
+  MOCK_METHOD(RtpTransceiverDirection, direction, (), (const, override));
+  MOCK_METHOD(void,
+              SetDirection,
+              (RtpTransceiverDirection new_direction),
+              (override));
+  MOCK_METHOD(RTCError,
+              SetDirectionWithError,
+              (RtpTransceiverDirection new_direction),
+              (override));
+  MOCK_METHOD(absl::optional<RtpTransceiverDirection>,
+              current_direction,
+              (),
+              (const, override));
+  MOCK_METHOD(absl::optional<RtpTransceiverDirection>,
+              fired_direction,
+              (),
+              (const, override));
+  MOCK_METHOD(RTCError, StopStandard, (), (override));
+  MOCK_METHOD(void, StopInternal, (), (override));
+  MOCK_METHOD(void, Stop, (), (override));
+  MOCK_METHOD(RTCError,
+              SetCodecPreferences,
+              (rtc::ArrayView<RtpCodecCapability> codecs),
+              (override));
+  MOCK_METHOD(std::vector<RtpCodecCapability>,
+              codec_preferences,
+              (),
+              (const, override));
+  MOCK_METHOD(std::vector<RtpHeaderExtensionCapability>,
+              HeaderExtensionsToOffer,
+              (),
+              (const, override));
+  MOCK_METHOD(webrtc::RTCError,
+              SetOfferedRtpHeaderExtensions,
+              (rtc::ArrayView<const RtpHeaderExtensionCapability>
+                   header_extensions_to_offer),
+              (override));
+
+ private:
+  MockRtpTransceiver() = default;
+};
+
+}  // namespace webrtc
+
+#endif  // API_TEST_MOCK_RTP_TRANSCEIVER_H_