Report metrics about negotiated ciphers.

talk/app/webrtc/fakemetricsobserver.h

Index: talk/app/webrtc/fakemetricsobserver.h
diff --git a/talk/app/webrtc/fakemetricsobserver.h b/talk/app/webrtc/fakemetricsobserver.h
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+/*
+ * libjingle
+ * Copyright 2015 Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  1. Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *  2. Redistributions in binary form must reproduce the above copyright notice,
+ *     this list of conditions and the following disclaimer in the documentation
+ *     and/or other materials provided with the distribution.
+ *  3. The name of the author may not be used to endorse or promote products
+ *     derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef TALK_APP_WEBRTC_FAKEMETRICSOBSERVER_H_
+#define TALK_APP_WEBRTC_FAKEMETRICSOBSERVER_H_
+
+#include <map>
+#include <string>
+
+#include "talk/app/webrtc/peerconnectioninterface.h"
+
+namespace webrtc {
+
+class FakeMetricsObserver : public MetricsObserverInterface {
+ public:
+  FakeMetricsObserver() { Reset(); }
+  void Reset() {
+    memset(peer_connection_metrics_counters_, 0,
+           sizeof(peer_connection_metrics_counters_));
+    memset(peer_connection_metrics_name_, 0,
+           sizeof(peer_connection_metrics_name_));
+    srtp_cipher_.clear();
+    ssl_cipher_.clear();
+  }
+
+  void IncrementCounter(PeerConnectionMetricsCounter type) override {
+    peer_connection_metrics_counters_[type]++;
+  }
+  void AddHistogramSample(PeerConnectionMetricsName type,
+                          int value) override {
+    ASSERT(peer_connection_metrics_name_[type] == 0);
+    peer_connection_metrics_name_[type] = value;
+  }
+  void CiphersNegotiated(const std::string& content_name,
+                         const std::string& srtp_cipher,
+                         const std::string& ssl_cipher) override {
+    ASSERT(srtp_cipher_.find(content_name) == srtp_cipher_.end());
+    srtp_cipher_[content_name] = srtp_cipher;
+    ASSERT(ssl_cipher_.find(content_name) == ssl_cipher_.end());
+    ssl_cipher_[content_name] = ssl_cipher;
+  }
+
+  int peer_connection_metrics_counters_
+      [kPeerConnectionMetricsCounter_Max];
+  int peer_connection_metrics_name_[kPeerConnectionMetricsCounter_Max];
+  std::map<std::string, std::string> srtp_cipher_;
+  std::map<std::string, std::string> ssl_cipher_;
+
+  int AddRef() override { return 1; }
+  int Release() override { return 1; }
+};
+
+}  // namespace webrtc
+
+#endif  // TALK_APP_WEBRTC_FAKEMETRICSOBSERVER_H_