DCHECK fix for https://codereview.webrtc.org/1769113003/

webrtc/modules/video_coding/histogram.cc

Index: webrtc/modules/video_coding/histogram.cc
diff --git a/webrtc/modules/video_coding/histogram.cc b/webrtc/modules/video_coding/histogram.cc
index 057e1f1db0d9e09f6ae5c6f4766276b567654b18..e07d50ba6f36e59902f71bc962101a25343aa63c 100644
--- a/webrtc/modules/video_coding/histogram.cc
+++ b/webrtc/modules/video_coding/histogram.cc
@@ -25,7 +25,6 @@ Histogram::Histogram(size_t num_buckets, size_t max_num_values) {
 }
 
 void Histogram::Add(size_t value) {
-  RTC_DCHECK_GE(value, 0u);
   value = std::min<size_t>(value, buckets_.size() - 1);
   if (index_ < values_.size()) {
     --buckets_[values_[index_]];