Rename RTCCodecStats.codec -> mimeType, parameters -> sdpFmtpLine.

As per https://github.com/w3c/webrtc-stats/pull/168.

NOTRY due to broken linux_ubsan_vptr, all other tests passed.

BUG=webrtc:7061
NOTRY=True

Review-Url: https://codereview.webrtc.org/2718383002
Cr-Commit-Position: refs/heads/master@{#16907}
diff --git a/webrtc/pc/rtcstats_integrationtest.cc b/webrtc/pc/rtcstats_integrationtest.cc
index 34adb4c..1176b54 100644
--- a/webrtc/pc/rtcstats_integrationtest.cc
+++ b/webrtc/pc/rtcstats_integrationtest.cc
@@ -334,10 +334,10 @@
       const RTCCodecStats& codec) {
     RTCStatsVerifier verifier(report_, &codec);
     verifier.TestMemberIsDefined(codec.payload_type);
-    verifier.TestMemberIsDefined(codec.codec);
+    verifier.TestMemberIsDefined(codec.mime_type);
     verifier.TestMemberIsPositive<uint32_t>(codec.clock_rate);
     verifier.TestMemberIsUndefined(codec.channels);
-    verifier.TestMemberIsUndefined(codec.parameters);
+    verifier.TestMemberIsUndefined(codec.sdp_fmtp_line);
     verifier.TestMemberIsUndefined(codec.implementation);
     return verifier.ExpectAllMembersSuccessfullyTested();
   }