Test field trial group with startswith rather than equals.

webrtc/media/engine/webrtcvideoengine2.cc

 /*
  *  Copyright (c) 2014 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 32 matching lines @@
 
 // Three things happen when the FlexFEC field trial is enabled:
 // 1) FlexFEC is exposed in the default codec list, eventually showing up
 //    in the default SDP. (See InternalEncoderFactory ctor.)
 // 2) FlexFEC send parameters are set in the VideoSendStream config.
 // 3) FlexFEC receive parameters are set in the FlexfecReceiveStream config,
 //    and the corresponding object is instantiated.
 const char kFlexfecFieldTrialName[] = "WebRTC-FlexFEC-03";
 
 bool IsFlexfecFieldTrialEnabled() {
-  return webrtc::field_trial::FindFullName(kFlexfecFieldTrialName) == "Enabled";
+  return webrtc::field_trial::IsEnabled(kFlexfecFieldTrialName);
 }
 
 // Wrap cricket::WebRtcVideoEncoderFactory as a webrtc::VideoEncoderFactory.
 class EncoderFactoryAdapter : public webrtc::VideoEncoderFactory {
  public:
   // EncoderFactoryAdapter doesn't take ownership of |factory|, which is owned
   // by e.g. PeerConnectionFactory.
   explicit EncoderFactoryAdapter(cricket::WebRtcVideoEncoderFactory* factory)
       : factory_(factory) {}
   virtual ~EncoderFactoryAdapter() {}
@@ skipping 2463 matching lines @@
         rtx_mapping[video_codecs[i].codec.id] !=
             ulpfec_config.red_payload_type) {
       video_codecs[i].rtx_payload_type = rtx_mapping[video_codecs[i].codec.id];
     }
   }
 
   return video_codecs;
 }
 
 }  // namespace cricket