Add macros for ability to log samples that are added to histograms (RTC_LOGGED_*).

webrtc/modules/video_coding/timing.cc

Index: webrtc/modules/video_coding/timing.cc
diff --git a/webrtc/modules/video_coding/timing.cc b/webrtc/modules/video_coding/timing.cc
index 91f5f8423c2b3411bad3cc5a49b332cad058597d..6542ef5b1526e1f8b4fc1c5c65c64a112d8d7f7e 100644
--- a/webrtc/modules/video_coding/timing.cc
+++ b/webrtc/modules/video_coding/timing.cc
@@ -62,14 +62,14 @@ void VCMTiming::UpdateHistograms() const {
   if (elapsed_sec < metrics::kMinRunTimeInSeconds) {
     return;
   }
-  RTC_HISTOGRAM_COUNTS_100(
+  RTC_LOGGED_HISTOGRAM_COUNTS_100(
       "WebRTC.Video.DecodedFramesPerSecond",
       static_cast<int>((num_decoded_frames_ / elapsed_sec) + 0.5f));
-  RTC_HISTOGRAM_PERCENTAGE(
+  RTC_LOGGED_HISTOGRAM_PERCENTAGE(
       "WebRTC.Video.DelayedFramesToRenderer",
       num_delayed_decoded_frames_ * 100 / num_decoded_frames_);
   if (num_delayed_decoded_frames_ > 0) {
-    RTC_HISTOGRAM_COUNTS_1000(
+    RTC_LOGGED_HISTOGRAM_COUNTS_1000(
         "WebRTC.Video.DelayedFramesToRenderer_AvgDelayInMs",
         sum_missed_render_deadline_ms_ / num_delayed_decoded_frames_);
   }