Android: Wrap webrtc::field_trial::FindFullName in Java

webrtc/sdk/android/src/jni/peerconnection_jni.cc

Index: webrtc/sdk/android/src/jni/peerconnection_jni.cc
diff --git a/webrtc/sdk/android/src/jni/peerconnection_jni.cc b/webrtc/sdk/android/src/jni/peerconnection_jni.cc
index 43daae126630da34d40d54f3734a8df360430bb8..5d3b6c50cbb2663f0aa11294b1c92f218fe73b4d 100644
--- a/webrtc/sdk/android/src/jni/peerconnection_jni.cc
+++ b/webrtc/sdk/android/src/jni/peerconnection_jni.cc
@@ -71,6 +71,7 @@
 #include "webrtc/media/base/videocapturer.h"
 #include "webrtc/media/engine/webrtcvideodecoderfactory.h"
 #include "webrtc/media/engine/webrtcvideoencoderfactory.h"
+#include "webrtc/system_wrappers/include/field_trial.h"
 #include "webrtc/system_wrappers/include/field_trial_default.h"
 #include "webrtc/system_wrappers/include/logcat_trace_context.h"
 #include "webrtc/system_wrappers/include/trace.h"
@@ -1144,6 +1145,12 @@ JOW(void, PeerConnectionFactory_initializeInternalTracer)(JNIEnv* jni, jclass) {
   rtc::tracing::SetupInternalTracer();
 }
 
+JOW(jstring, PeerConnectionFactory_fieldTrialsFindFullName)
+(JNIEnv* jni, jclass, jstring j_name) {
+  return JavaStringFromStdString(
+      jni, webrtc::field_trial::FindFullName(JavaToStdString(jni, j_name)));
+}
+
 JOW(jboolean, PeerConnectionFactory_startInternalTracingCapture)(
     JNIEnv* jni, jclass, jstring j_event_tracing_filename) {
   if (!j_event_tracing_filename)