Adding entry point for the v2 stats API.

Bug: webrtc:10345
Change-Id: I9271376ff60f5fc6e9014b7dd9a8a5682bdbf452
Reviewed-on: https://webrtc-review.googlesource.com/c/123780
Commit-Queue: Peter Hanspers <peterhanspers@webrtc.org>
Reviewed-by: Kári Helgason <kthelgason@webrtc.org>
Reviewed-by: Anders Carlsson <andersc@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#26801}
diff --git a/sdk/BUILD.gn b/sdk/BUILD.gn
index 7963405..5ffd964 100644
--- a/sdk/BUILD.gn
+++ b/sdk/BUILD.gn
@@ -887,6 +887,9 @@
         "objc/api/peerconnection/RTCSessionDescription+Private.h",
         "objc/api/peerconnection/RTCSessionDescription.h",
         "objc/api/peerconnection/RTCSessionDescription.mm",
+        "objc/api/peerconnection/RTCStatisticsReport+Private.h",
+        "objc/api/peerconnection/RTCStatisticsReport.h",
+        "objc/api/peerconnection/RTCStatisticsReport.mm",
         "objc/api/peerconnection/RTCTracing.h",
         "objc/api/peerconnection/RTCTracing.mm",
         "objc/api/peerconnection/RTCVideoTrack+Private.h",
@@ -917,6 +920,7 @@
         ":videotoolbox_objc",
         "../api:create_peerconnection_factory",
         "../api:libjingle_peerconnection_api",
+        "../api:rtc_stats_api",
         "../api:scoped_refptr",
         "../api/audio_codecs:audio_codecs_api",
         "../api/audio_codecs:builtin_audio_decoder_factory",