media: Report RAPPOR for media pipeline errors

tools/metrics/rappor/rappor.xml

Index: tools/metrics/rappor/rappor.xml
diff --git a/tools/metrics/rappor/rappor.xml b/tools/metrics/rappor/rappor.xml
index ad4d53b3009844ca915beb8d3001e0c5cf267a1d..479f0429ac98f366fa45567081303d1e02dd195d 100644
--- a/tools/metrics/rappor/rappor.xml
+++ b/tools/metrics/rappor/rappor.xml
@@ -616,6 +616,14 @@ components/rappor/rappor_parameters.h.
   </summary>
 </rappor-metric>
 
+<rappor-metric name="Media.OriginUrl.MSE.PipelineError" type="ETLD_PLUS_ONE">
+  <owner>xhwang@chromium.org</owner>
+  <summary>
+    The domain and registry of the URL that loads an HTML5 media player using
+    Media Source Extensions (MSE) and ends up with an error.
+  </summary>
+</rappor-metric>
+
 <rappor-metric name="Media.OriginUrl.MSE.Secure" type="ETLD_PLUS_ONE">
   <owner>wolenetz@chromium.org</owner>
   <summary>
@@ -632,6 +640,14 @@ components/rappor/rappor_parameters.h.
   </summary>
 </rappor-metric>
 
+<rappor-metric name="Media.OriginUrl.SRC.PipelineError" type="ETLD_PLUS_ONE">
+  <owner>xhwang@chromium.org</owner>
+  <summary>
+    The domain and registry of the URL that loads an HTML5 media player using
+    SRC and ends up with an error.
+  </summary>
+</rappor-metric>
+
 <rappor-metric name="NTP.ExplicitUserAction.PageNavigation.NTPTileClick"
     type="UMA_RAPPOR_TYPE">
   <owner>knn@chromium.org</owner>