Implement timing frames.

webrtc/modules/video_coding/codecs/h264/h264_encoder_impl.cc

Index: webrtc/modules/video_coding/codecs/h264/h264_encoder_impl.cc
diff --git a/webrtc/modules/video_coding/codecs/h264/h264_encoder_impl.cc b/webrtc/modules/video_coding/codecs/h264/h264_encoder_impl.cc
index dbc83f8eeeddc25729ca6d268372701d66d7e153..cdbe6f5ecfe416eedcfae82d09f309cc91729ea7 100644
--- a/webrtc/modules/video_coding/codecs/h264/h264_encoder_impl.cc
+++ b/webrtc/modules/video_coding/codecs/h264/h264_encoder_impl.cc
@@ -21,8 +21,8 @@
 
 #include "webrtc/base/checks.h"
 #include "webrtc/base/logging.h"
+#include "webrtc/base/timeutils.h"
 #include "webrtc/common_video/libyuv/include/webrtc_libyuv.h"
-#include "webrtc/media/base/mediaconstants.h"
 #include "webrtc/system_wrappers/include/metrics.h"
 
 namespace webrtc {
@@ -370,6 +370,7 @@ int32_t H264EncoderImpl::Encode(const VideoFrame& input_frame,
   encoded_image_.content_type_ = (mode_ == kScreensharing)
                                      ? VideoContentType::SCREENSHARE
                                      : VideoContentType::UNSPECIFIED;
+  encoded_image_.timing_.is_timing_frame = false;
   encoded_image_._frameType = ConvertToVideoFrameType(info.eFrameType);
 
   // Split encoded image up into fragments. This also updates |encoded_image_|.