WebRTCPeerConnectionHandler::getStats for the new stats collector API

content/renderer/media/webrtc/rtc_stats.h

 // Copyright (c) 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_MEDIA_WEBRTC_RTC_STATS_H_
 #define CONTENT_RENDERER_MEDIA_WEBRTC_RTC_STATS_H_
 
 #include "base/memory/ref_counted.h"
 #include "third_party/WebKit/public/platform/WebRTCStats.h"
 #include "third_party/webrtc/api/rtcstats.h"
@@ skipping 38 matching lines @@
 };
 
 class RTCStatsMember : public blink::WebRTCStatsMember {
  public:
   RTCStatsMember(const scoped_refptr<const webrtc::RTCStatsReport>& stats_owner,
                  const webrtc::RTCStatsMemberInterface* member);
   ~RTCStatsMember() override;
 
   blink::WebString name() const override;
   blink::WebRTCStatsMemberType type() const override;
+  bool isDefined() const override;
 
   int32_t valueInt32() const override;
   uint32_t valueUint32() const override;
   int64_t valueInt64() const override;
   uint64_t valueUint64() const override;
   double valueDouble() const override;
   blink::WebString valueString() const override;
   blink::WebVector<int32_t> valueSequenceInt32() const override;
   blink::WebVector<uint32_t> valueSequenceUint32() const override;
   blink::WebVector<int64_t> valueSequenceInt64() const override;
   blink::WebVector<uint64_t> valueSequenceUint64() const override;
   blink::WebVector<double> valueSequenceDouble() const override;
   blink::WebVector<blink::WebString> valueSequenceString() const override;
 
  private:
   // Reference to keep the report that owns |member_|'s stats object alive.
   const scoped_refptr<const webrtc::RTCStatsReport> stats_owner_;
   // Pointer to member of a stats object that is owned by |stats_owner_|.
   const webrtc::RTCStatsMemberInterface* const member_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_WEBRTC_RTC_STATS_H_