Test field trial group with startswith rather than equals.

webrtc/call/call_perf_tests.cc

 /*
  *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 272 matching lines @@
   voe_base->DeleteChannel(recv_channel_id);
   voe_base->Release();
 
   DestroyCalls();
 
   VoiceEngine::Delete(voice_engine);
 
   observer.PrintResults();
 
   // In quick test synchronization may not be achieved in time.
-  if (field_trial::FindFullName("WebRTC-QuickPerfTest") != "Enabled") {
+  if (field_trial::IsEnabled("WebRTC-QuickPerfTest")) {

[danilchap, 2017/03/01 12:07:15]

should this be negation?

     EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.AVSyncOffsetInMs"));
   }
 }
 
 TEST_F(CallPerfTest, PlaysOutAudioAndVideoInSyncWithVideoNtpDrift) {
   TestAudioVideoSync(FecMode::kOff, CreateOrder::kAudioFirst,
                      DriftingClock::PercentsFaster(10.0f),
                      DriftingClock::kNoDrift, DriftingClock::kNoDrift);
 }
 
@@ skipping 432 matching lines @@
     uint32_t last_set_bitrate_kbps_;
     VideoSendStream* send_stream_;
     test::FrameGeneratorCapturer* frame_generator_;
     VideoEncoderConfig encoder_config_;
   } test;
 
   RunBaseTest(&test);
 }
 
 }  // namespace webrtc