Move histogram for number of pause events to per stream.

webrtc/video/end_to_end_tests.cc

Index: webrtc/video/end_to_end_tests.cc
diff --git a/webrtc/video/end_to_end_tests.cc b/webrtc/video/end_to_end_tests.cc
index 4de6db49cdc7d36c8b9b0b58ae715263ef56098d..6caa44654b5c1445da42e4b6680f01b78ac51bba 100644
--- a/webrtc/video/end_to_end_tests.cc
+++ b/webrtc/video/end_to_end_tests.cc
@@ -2382,6 +2382,9 @@ void EndToEndTest::VerifyHistogramStats(bool use_rtx,
   EXPECT_EQ(1, metrics::NumSamples(video_prefix + "EncodeTimeInMs"));
   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.DecodeTimeInMs"));
 
+  EXPECT_EQ(1, metrics::NumSamples(video_prefix + "NumberOfPauseEvents"));
+  EXPECT_EQ(1, metrics::NumSamples(video_prefix + "PausedTimeInPercent"));
+
   EXPECT_EQ(1, metrics::NumSamples(video_prefix + "BitrateSentInKbps"));
   EXPECT_EQ(1, metrics::NumSamples("WebRTC.Video.BitrateReceivedInKbps"));
   EXPECT_EQ(1, metrics::NumSamples(video_prefix + "MediaBitrateSentInKbps"));