Moving src/webrtc into src/.

In order to eliminate the WebRTC Subtree mirror in Chromium, 
WebRTC is moving the content of the src/webrtc directory up
to the src/ directory.

NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
TBR=tommi@webrtc.org

Bug: chromium:611808
Change-Id: Iac59c5b51b950f174119565bac87955a7994bc38
Reviewed-on: https://webrtc-review.googlesource.com/1560
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Henrik Kjellander <kjellander@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#19845}

api/umametrics.h

@@ -0,0 +1,142 @@
+/*
+ *  Copyright 2014 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.
+ */
+
+// This file contains enums related to IPv4/IPv6 metrics.
+
+#ifndef WEBRTC_API_UMAMETRICS_H_
+#define WEBRTC_API_UMAMETRICS_H_
+
+#include "webrtc/rtc_base/refcount.h"
+
+namespace webrtc {
+
+// Used to specify which enum counter type we're incrementing in
+// MetricsObserverInterface::IncrementEnumCounter.
+enum PeerConnectionEnumCounterType {
+  kEnumCounterAddressFamily,
+  // For the next 2 counters, we track them separately based on the "first hop"
+  // protocol used by the local candidate. "First hop" means the local candidate
+  // type in the case of non-TURN candidates, and the protocol used to connect
+  // to the TURN server in the case of TURN candidates.
+  kEnumCounterIceCandidatePairTypeUdp,
+  kEnumCounterIceCandidatePairTypeTcp,
+
+  kEnumCounterAudioSrtpCipher,
+  kEnumCounterAudioSslCipher,
+  kEnumCounterVideoSrtpCipher,
+  kEnumCounterVideoSslCipher,
+  kEnumCounterDataSrtpCipher,
+  kEnumCounterDataSslCipher,
+  kEnumCounterDtlsHandshakeError,
+  kEnumCounterIceRegathering,
+  kEnumCounterIceRestart,
+  kPeerConnectionEnumCounterMax
+};
+
+// Currently this contains information related to WebRTC network/transport
+// information.
+
+// The difference between PeerConnectionEnumCounter and
+// PeerConnectionMetricsName is that the "EnumCounter" is only counting the
+// occurrences of events, while "Name" has a value associated with it which is
+// used to form a histogram.
+
+// This enum is backed by Chromium's histograms.xml,
+// chromium/src/tools/metrics/histograms/histograms.xml
+// Existing values cannot be re-ordered and new enums must be added
+// before kBoundary.
+enum PeerConnectionAddressFamilyCounter {
+  kPeerConnection_IPv4,
+  kPeerConnection_IPv6,
+  kBestConnections_IPv4,
+  kBestConnections_IPv6,
+  kPeerConnectionAddressFamilyCounter_Max,
+};
+
+// TODO(guoweis): Keep previous name here until all references are renamed.
+#define kBoundary kPeerConnectionAddressFamilyCounter_Max
+
+// TODO(guoweis): Keep previous name here until all references are renamed.
+typedef PeerConnectionAddressFamilyCounter PeerConnectionUMAMetricsCounter;
+
+// This enum defines types for UMA samples, which will have a range.
+enum PeerConnectionMetricsName {
+  kNetworkInterfaces_IPv4,  // Number of IPv4 interfaces.
+  kNetworkInterfaces_IPv6,  // Number of IPv6 interfaces.
+  kTimeToConnect,           // In milliseconds.
+  kLocalCandidates_IPv4,    // Number of IPv4 local candidates.
+  kLocalCandidates_IPv6,    // Number of IPv6 local candidates.
+  kPeerConnectionMetricsName_Max
+};
+
+// TODO(guoweis): Keep previous name here until all references are renamed.
+typedef PeerConnectionMetricsName PeerConnectionUMAMetricsName;
+
+// The IceCandidatePairType has the format of
+// <local_candidate_type>_<remote_candidate_type>. It is recorded based on the
+// type of candidate pair used when the PeerConnection first goes to a completed
+// state. When BUNDLE is enabled, only the first transport gets recorded.
+enum IceCandidatePairType {
+  // HostHost is deprecated. It was replaced with the set of types at the bottom
+  // to report private or public host IP address.
+  kIceCandidatePairHostHost,
+  kIceCandidatePairHostSrflx,
+  kIceCandidatePairHostRelay,
+  kIceCandidatePairHostPrflx,
+  kIceCandidatePairSrflxHost,
+  kIceCandidatePairSrflxSrflx,
+  kIceCandidatePairSrflxRelay,
+  kIceCandidatePairSrflxPrflx,
+  kIceCandidatePairRelayHost,
+  kIceCandidatePairRelaySrflx,
+  kIceCandidatePairRelayRelay,
+  kIceCandidatePairRelayPrflx,
+  kIceCandidatePairPrflxHost,
+  kIceCandidatePairPrflxSrflx,
+  kIceCandidatePairPrflxRelay,
+
+  // The following 4 types tell whether local and remote hosts have private or
+  // public IP addresses.
+  kIceCandidatePairHostPrivateHostPrivate,
+  kIceCandidatePairHostPrivateHostPublic,
+  kIceCandidatePairHostPublicHostPrivate,
+  kIceCandidatePairHostPublicHostPublic,
+  kIceCandidatePairMax
+};
+
+class MetricsObserverInterface : public rtc::RefCountInterface {
+ public:
+  // |type| is the type of the enum counter to be incremented. |counter|
+  // is the particular counter in that type. |counter_max| is the next sequence
+  // number after the highest counter.
+  virtual void IncrementEnumCounter(PeerConnectionEnumCounterType type,
+                                    int counter,
+                                    int counter_max) {}
+
+  // This is used to handle sparse counters like SSL cipher suites.
+  // TODO(guoweis): Remove the implementation once the dependency's interface
+  // definition is updated.
+  virtual void IncrementSparseEnumCounter(PeerConnectionEnumCounterType type,
+                                          int counter) {
+    IncrementEnumCounter(type, counter, 0 /* Ignored */);
+  }
+
+  virtual void AddHistogramSample(PeerConnectionMetricsName type,
+                                  int value) = 0;
+
+ protected:
+  virtual ~MetricsObserverInterface() {}
+};
+
+typedef MetricsObserverInterface UMAObserver;
+
+}  // namespace webrtc
+
+#endif  // WEBRTC_API_UMAMETRICS_H_