Fix quick perf test setting that was accidentally inverted.

webrtc/call/call_perf_tests.cc

Index: webrtc/call/call_perf_tests.cc
diff --git a/webrtc/call/call_perf_tests.cc b/webrtc/call/call_perf_tests.cc
index a510483690e8aadb7e6c646ba365c4b23164f4f1..1551cd7b86791f61989196a5f861f60d201ca6ed 100644
--- a/webrtc/call/call_perf_tests.cc
+++ b/webrtc/call/call_perf_tests.cc
@@ -290,7 +290,7 @@ void CallPerfTest::TestAudioVideoSync(FecMode fec,
   observer.PrintResults();
 
   // In quick test synchronization may not be achieved in time.
-  if (field_trial::IsEnabled("WebRTC-QuickPerfTest")) {
+  if (!field_trial::IsEnabled("WebRTC-QuickPerfTest")) {
     EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.AVSyncOffsetInMs"));
   }
 }