Add dedicated PipelineStatus UMAs for encrypted playback

tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index f46a8b87c2a38de7735ce4a4eeb88030552d6451..108c985d882aa4537283a734833fcdf4dce445fa 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -58413,15 +58413,46 @@ To add a new entry, add it with any value and run test to compute valid value.
   <suffix name="AudioVideo.Other"
       label="PipelineStatus for the codecs that dont have an explicit metric."/>
   <suffix name="AudioVideo.VP8.SW"
-      label="PipelineStatus for AV streams with VP8 Software decoder."/>
+      label="PipelineStatus for AV streams with VP8 software decoder."/>
+  <suffix name="AudioVideo.VP8.HW"
+      label="PipelineStatus for AV streams with VP8 hardware decoder."/>
+  <suffix name="AudioVideo.VP8.DDS.SW"
+      label="PipelineStatus for AV streams with VP8 software codec and that
+             go through the DecryptingDemuxerStream (DDS)."/>
+  <suffix name="AudioVideo.VP8.DDS.HW"
+      label="PipelineStatus for AV streams with VP8 hardware codec and that
+             go through the DecryptingDemuxerStream (DDS)."/>
+  <suffix name="AudioVideo.VP8.DVD"
+      label="PipelineStatus for AV streams with VP8 codec and that go through
+             the DecryptingVideoDecoder (DVD)."/>
   <suffix name="AudioVideo.VP9.SW"
-      label="PipelineStatus for AV streams with VP9 Software decoder."/>
-  <suffix name="AudioVideo.H264.HW"
-      label="PipelineStatus for hardware decoded AV streams with H264
-             decoder."/>
+      label="PipelineStatus for AV streams with VP9 software decoder."/>
+  <suffix name="AudioVideo.VP9.HW"
+      label="PipelineStatus for AV streams with VP9 hardware decoder."/>
+  <suffix name="AudioVideo.VP9.DDS.SW"
+      label="PipelineStatus for AV streams with VP9 codec and that go through
+             the DecryptingDemuxerStream (DDS)."/>
+  <suffix name="AudioVideo.VP9.DDS.HW"
+      label="PipelineStatus for AV streams with VP9 hardware codec and that
+             go through the DecryptingDemuxerStream (DDS)."/>
+  <suffix name="AudioVideo.VP9.DVD"
+      label="PipelineStatus for AV streams with VP9 software codec and that
+             go through the DecryptingVideoDecoder (DVD)."/>
   <suffix name="AudioVideo.H264.SW"
       label="PipelineStatus for software decoded AV streams with H264
              decoder."/>
+  <suffix name="AudioVideo.H264.HW"
+      label="PipelineStatus for hardware decoded AV streams with H264
+             decoder."/>
+  <suffix name="AudioVideo.H264.DDS.SW"
+      label="PipelineStatus for AV streams with H264 software decoder and
+             that go through the DecryptingDemuxerStream (DDS)."/>
+  <suffix name="AudioVideo.H264.DDS.HW"
+      label="PipelineStatus for AV streams with H264 hardware decoder and
+             that go through the DecryptingDemuxerStream (DDS)."/>
+  <suffix name="AudioVideo.H264.DVD"
+      label="PipelineStatus for AV streams with H264 decoder and that go
+             through the DecryptingVideoDecoder (DVD)."/>
   <suffix name="AudioOnly" label="PipelineStatus for Audio-only streams."/>
   <suffix name="VideoOnly" label="PipelineStatus for Video-only streams."/>
   <suffix name="Unsupported" label="PipelineStatus for unsupported streams."/>