Report metrics about negotiated ciphers.

talk/app/webrtc/fakemetricsobserver.h

Index: talk/app/webrtc/fakemetricsobserver.h
diff --git a/talk/app/webrtc/dtlsidentityservice.h b/talk/app/webrtc/fakemetricsobserver.h
similarity index 58%
copy from talk/app/webrtc/dtlsidentityservice.h
copy to talk/app/webrtc/fakemetricsobserver.h
index 760cab45651dd505731be490fbbc73fef1d4e07a..e9e49749bf104246b32dab0d3ebc124cc355cd2b 100644
--- a/talk/app/webrtc/dtlsidentityservice.h
+++ b/talk/app/webrtc/fakemetricsobserver.h
@@ -25,35 +25,44 @@
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef TALK_APP_WEBRTC_DTLSIDENTITYSERVICE_H_
-#define TALK_APP_WEBRTC_DTLSIDENTITYSERVICE_H_
+#ifndef TALK_APP_WEBRTC_FAKEMETRICSOBSERVER_H_
+#define TALK_APP_WEBRTC_FAKEMETRICSOBSERVER_H_
 
+#include <map>
 #include <string>
 
 #include "talk/app/webrtc/peerconnectioninterface.h"
+#include "webrtc/base/thread_checker.h"
 
 namespace webrtc {
 
-class DtlsIdentityStore;
-
-// This class forwards the request to DtlsIdentityStore to generate the
-// identity.
-class DtlsIdentityService : public webrtc::DTLSIdentityServiceInterface {
+class FakeMetricsObserver : public MetricsObserverInterface {
  public:
-  explicit DtlsIdentityService(DtlsIdentityStore* store) : store_(store) {}
+  FakeMetricsObserver();
+  void Reset();
+
+  void IncrementCounter(PeerConnectionMetricsCounter type) override;
+  void AddHistogramSample(PeerConnectionMetricsName type,
+                          int value) override;
+  void AddHistogramSample(PeerConnectionMetricsName type,
+                          const std::string& value) override;
+
+  // Accessors to be used by the tests.
+  int GetCounter(PeerConnectionMetricsCounter type) const;
+  int GetIntHistogramSample(PeerConnectionMetricsName type) const;
+  const std::string& GetStringHistogramSample(
+      PeerConnectionMetricsName type) const;
 
-  // DTLSIdentityServiceInterface impl.
-  // |identity_name| and |common_name| must equal to
-  // DtlsIdentityStore::kIdentityName, otherwise the request will fail and false
-  // will be returned.
-  bool RequestIdentity(const std::string& identity_name,
-                       const std::string& common_name,
-                       webrtc::DTLSIdentityRequestObserver* observer) override;
+ protected:
+  ~FakeMetricsObserver() {}
 
  private:
-  DtlsIdentityStore* store_;
+  rtc::ThreadChecker thread_checker_;
+  int counters_[kPeerConnectionMetricsCounter_Max];
+  int int_histogram_samples_[kPeerConnectionMetricsCounter_Max];
+  std::string string_histogram_samples_[kPeerConnectionMetricsName_Max];
 };
 
 }  // namespace webrtc
 
-#endif  // TALK_APP_WEBRTC_DTLSIDENTITYSERVICE_H_
+#endif  // TALK_APP_WEBRTC_FAKEMETRICSOBSERVER_H_