WebRTCPeerConnectionHandler::getStats for the new stats collector API

content/test/BUILD.gn

Index: content/test/BUILD.gn
diff --git a/content/test/BUILD.gn b/content/test/BUILD.gn
index 5143fceecb8515804021492424dc231f5e5e5723..84d464f6f3d54c5df2e9c3ce3e6a12d9eae007a0 100644
--- a/content/test/BUILD.gn
+++ b/content/test/BUILD.gn
@@ -298,9 +298,11 @@ static_library("test_support") {
     deps += [
       "//third_party/libjingle:libjingle_webrtc",
       "//third_party/webrtc/api:libjingle_peerconnection",
+      "//third_party/webrtc/api:rtc_stats_api",
       "//third_party/webrtc/base:rtc_base",
       "//third_party/webrtc/media:rtc_media",
       "//third_party/webrtc/modules/video_capture",
+      "//third_party/webrtc/stats:rtc_stats",
     ]
   }
 
@@ -1507,6 +1509,7 @@ test("content_unittests") {
       "//third_party/webrtc/media:rtc_media",
       "//third_party/webrtc/modules/desktop_capture:primitives",
       "//third_party/webrtc/modules/video_capture",
+      "//third_party/webrtc/stats:rtc_stats_test_utils",
       "//ui/shell_dialogs:shell_dialogs",
     ]