Implement timing frames.

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

Index: webrtc/sdk/android/src/jni/androidmediaencoder_jni.cc
diff --git a/webrtc/sdk/android/src/jni/androidmediaencoder_jni.cc b/webrtc/sdk/android/src/jni/androidmediaencoder_jni.cc
index 39c1e96cbec2dd4cb9c232041e243ea3457e4b78..52f3e198ff99ce882e21aae4d53e5a4426543d5d 100644
--- a/webrtc/sdk/android/src/jni/androidmediaencoder_jni.cc
+++ b/webrtc/sdk/android/src/jni/androidmediaencoder_jni.cc
@@ -1048,6 +1048,7 @@ bool MediaCodecVideoEncoder::DeliverPendingOutputs(JNIEnv* jni) {
           (codec_mode_ == webrtc::VideoCodecMode::kScreensharing)
               ? webrtc::VideoContentType::SCREENSHARE
               : webrtc::VideoContentType::UNSPECIFIED;
+      image->timing_.is_timing_frame = false;
       image->_frameType =
           (key_frame ? webrtc::kVideoFrameKey : webrtc::kVideoFrameDelta);
       image->_completeFrame = true;