RTCPeerConnection.getStats: Whitelist of stats in unittest.

chrome/browser/media/webrtc/webrtc_browsertest.cc

Index: chrome/browser/media/webrtc/webrtc_browsertest.cc
diff --git a/chrome/browser/media/webrtc/webrtc_browsertest.cc b/chrome/browser/media/webrtc/webrtc_browsertest.cc
index 10ead6ad37b999e8fde2b38117f2b83ff0bc9cdf..9e0a47220f0af75e4d12eb7158f5d995349dadb7 100644
--- a/chrome/browser/media/webrtc/webrtc_browsertest.cc
+++ b/chrome/browser/media/webrtc/webrtc_browsertest.cc
@@ -222,7 +222,16 @@ IN_PROC_BROWSER_TEST_F(WebRtcBrowserTest,
   SetupPeerconnectionWithLocalStream(right_tab_);
   NegotiateCall(left_tab_, right_tab_);
 
-  VerifyStatsGeneratedPromise(left_tab_);
+  std::set<std::string> missing_expected_stats;
+  for (const std::string str : GetWhitelistedStatsTypes(left_tab_)) {
+    missing_expected_stats.insert(str);
+  }
+  for (const std::string str : VerifyStatsGeneratedPromise(left_tab_)) {
+    missing_expected_stats.erase(str);
+  }
+  // TODO(hbos): When all stats are ready and returned by "getStats":
+  // EXPECT_TRUE(missing_expected_stats.empty());
+  // crbug.com/627816
 
   DetectVideoAndHangUp();
 }