Android: Add field trial for Intel HW Vp8 encoder

webrtc/examples/androidapp/src/org/appspot/apprtc/PeerConnectionClient.java

Index: webrtc/examples/androidapp/src/org/appspot/apprtc/PeerConnectionClient.java
diff --git a/webrtc/examples/androidapp/src/org/appspot/apprtc/PeerConnectionClient.java b/webrtc/examples/androidapp/src/org/appspot/apprtc/PeerConnectionClient.java
index cc5e457cbf0594e1514371af193517a0169cd09b..737e854b8739dad843e1365a031ecd02704b921b 100644
--- a/webrtc/examples/androidapp/src/org/appspot/apprtc/PeerConnectionClient.java
+++ b/webrtc/examples/androidapp/src/org/appspot/apprtc/PeerConnectionClient.java
@@ -73,6 +73,7 @@ public class PeerConnectionClient {
   private static final String AUDIO_CODEC_ISAC = "ISAC";
   private static final String VIDEO_CODEC_PARAM_START_BITRATE = "x-google-start-bitrate";
   private static final String VIDEO_FLEXFEC_FIELDTRIAL = "WebRTC-FlexFEC-03/Enabled/";
+  private static final String VIDEO_VP8_INTEL_HW_ENCODER_FIELDTRIAL = "WebRTC-IntelVP8/Enabled/";
   private static final String AUDIO_CODEC_PARAM_BITRATE = "maxaveragebitrate";
   private static final String AUDIO_ECHO_CANCELLATION_CONSTRAINT = "googEchoCancellation";
   private static final String AUDIO_AUTO_GAIN_CONTROL_CONSTRAINT = "googAutoGainControl";
@@ -371,12 +372,13 @@ public class PeerConnectionClient {
     isError = false;
 
     // Initialize field trials.
+    String fieldTrials = "";
     if (peerConnectionParameters.videoFlexfecEnabled) {
-      PeerConnectionFactory.initializeFieldTrials(VIDEO_FLEXFEC_FIELDTRIAL);
+      fieldTrials += VIDEO_FLEXFEC_FIELDTRIAL;
       Log.d(TAG, "Enable FlexFEC field trial.");
-    } else {
-      PeerConnectionFactory.initializeFieldTrials("");
     }
+    fieldTrials += VIDEO_VP8_INTEL_HW_ENCODER_FIELDTRIAL;
+    PeerConnectionFactory.initializeFieldTrials(fieldTrials);
 
     // Check preferred video codec.
     preferredVideoCodec = VIDEO_CODEC_VP8;