Enabling clang::find_bad_constructs for libjingle_peerconnection_api.

This CL removes //build/config/clang:find_bad_constructs from the
suppressed_configs list, which means that clang:find_bad_constructs
is now enabled on these translation units.

Bug: webrtc:9251, webrtc:163
Change-Id: I5475e574353c772910181495fdb3400b5f0e7399
Reviewed-on: https://webrtc-review.googlesource.com/87240
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24040}

api/datachannelinterface.cc

@@ -0,0 +1,35 @@
+/*
+ *  Copyright 2018 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 "api/datachannelinterface.h"
+
+namespace webrtc {
+
+bool DataChannelInterface::ordered() const {
+  return false;
+}
+
+uint16_t DataChannelInterface::maxRetransmitTime() const {
+  return 0;
+}
+
+uint16_t DataChannelInterface::maxRetransmits() const {
+  return 0;
+}
+
+std::string DataChannelInterface::protocol() const {
+  return std::string();
+}
+
+bool DataChannelInterface::negotiated() const {
+  return false;
+}
+
+}  // namespace webrtc