Import wpt@cc7aa411108eaa975bc9b7faabe6801c714c8595

Using wpt-import in Chromium 25f2a15c.
With Chromium commits locally applied on WPT:
d0ad7cf8 "UpgradeInsecureRequest: Add WPTs for static-import in dedicated/shared workers"
39f5c78d "Reland test for lost pointercapture in disconnected node in shadow dom"
86287853 "NativeIO: Plumbing and minimal functionality."


Note to sheriffs: This CL imports external tests and adds
expectations for those tests; if this CL is large and causes
a few new failures, please fix the failures by adding new
lines to TestExpectations rather than reverting. See:
https://chromium.googlesource.com/chromium/src/+/master/docs/testing/web_platform_tests.md

NOAUTOREVERT=true
TBR=robertma

No-Export: true
Change-Id: I15ffc3191b4cbf6c56fa8bdc575c565b31826b7f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2119112Reviewed-by: WPT Autoroller <wpt-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: WPT Autoroller <wpt-autoroller@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#753409}

third_party/blink/web_tests/external/wpt/interfaces/webrtc-stats.idl

@@ -330,6 +330,9 @@ dictionary RTCIceCandidatePairStats : RTCStats {
              DOMHighResTimeStamp           consentExpiredTimestamp;
              unsigned long                 packetsDiscardedOnSend;
              unsigned long long            bytesDiscardedOnSend;
+             unsigned long long            requestBytesSent;
+             unsigned long long            consentRequestBytesSent;
+             unsigned long long            responseBytesSent;
 };
 
 enum RTCStatsIceCandidatePairState {