Remove default argument in GetSimulcastConfig.

Bug: webrtc:9368
Change-Id: Id0f5392daaeda826abad36604550317ce9431544
Reviewed-on: https://webrtc-review.googlesource.com/81662
Reviewed-by: Åsa Persson <asapersson@webrtc.org>
Reviewed-by: Magnus Jedvert <magjed@webrtc.org>
Commit-Queue: Rasmus Brandt <brandtr@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#23559}
diff --git a/media/engine/simulcast.h b/media/engine/simulcast.h
index 8708b9b..7a98809 100644
--- a/media/engine/simulcast.h
+++ b/media/engine/simulcast.h
@@ -24,7 +24,6 @@
 int GetTotalMaxBitrateBps(const std::vector<webrtc::VideoStream>& streams);
 
 // Get simulcast settings.
-// TODO(sprang): Remove default parameter when it's not longer referenced.
 std::vector<webrtc::VideoStream> GetSimulcastConfig(
     size_t max_layers,
     int width,
@@ -33,7 +32,7 @@
     double bitrate_priority,
     int max_qp,
     int max_framerate,
-    bool is_screenshare = false);
+    bool is_screenshare);
 
 // Gets the simulcast config layers for a non-screensharing case.
 std::vector<webrtc::VideoStream> GetNormalSimulcastLayers(