Add autothread to pseudo-tcp fuzzer.

webrtc/test/fuzzers/pseudotcp_parser_fuzzer.cc

 /*
 *  Copyright (c) 2016 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 <stddef.h>
 #include <stdint.h>
 
+#include "webrtc/base/thread.h"
 #include "webrtc/p2p/base/pseudotcp.h"
 
 namespace webrtc {
 class FakeIPseudoTcpNotify : public cricket::IPseudoTcpNotify {
  public:
   void OnTcpOpen(cricket::PseudoTcp* tcp) {}
   void OnTcpReadable(cricket::PseudoTcp* tcp) {}
   void OnTcpWriteable(cricket::PseudoTcp* tcp) {}
   void OnTcpClosed(cricket::PseudoTcp* tcp, uint32_t error) {}
 
   cricket::IPseudoTcpNotify::WriteResult TcpWritePacket(cricket::PseudoTcp* tcp,
                                                         const char* buffer,
                                                         size_t len) {
     return cricket::IPseudoTcpNotify::WriteResult::WR_SUCCESS;
   }
 };
 
 struct Environment {
-  cricket::PseudoTcp* ptcp;
-  explicit Environment(cricket::IPseudoTcpNotify* notifier) {
-    ptcp = new cricket::PseudoTcp(notifier, 0);
+  explicit Environment(cricket::IPseudoTcpNotify* notifier):
+      ptcp(new cricket::PseudoTcp(notifier, 0)) {
   }
+
+  cricket::PseudoTcp* const ptcp;
+
+  // We need the thread to avoid some uninteresting crashes, since the
+  // production code expects there to be a thread object available.
+  rtc::AutoThread thread;
 };
 
 Environment* env = new Environment(new FakeIPseudoTcpNotify());
 
 void FuzzOneInput(const uint8_t* data, size_t size) {
   env->ptcp->NotifyPacket(reinterpret_cast<const char*>(data), size);
 }
 }  // namespace webrtc