Add VaapiVideoEncodeAccelerator for HW-accelerated video encode.

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 192890baecdf591911364b52d088e9072aaae452..6cd4d648a5a194fe2b6784c6d3e06e01ed845a21 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -10219,6 +10219,13 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   </summary>
 </histogram>
 
+<histogram name="Media.VAVEA.EncoderFailure" enum="VAVEAEncoderFailure">
+  <owner>posciak@chromium.org</owner>
+  <summary>
+    Error codes reported by video encode using VA-API hardware video encoder.
+  </summary>
+</histogram>
+
 <histogram name="Media.VideoCapture.AspectRatio">
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <summary>
@@ -45586,6 +45593,10 @@ Therefore, the affected-histogram name has to have at least one dot in it.
   <int value="4" label="VAAPI_ERROR"/>
 </enum>
 
+<enum name="VAVEAEncoderFailure" type="int">
+  <int value="0" label="VAAPI_ERROR"/>
+</enum>
+
 <enum name="VideoCodec" type="int">
   <int value="0" label="kUnknownVideoCodec"/>
   <int value="1" label="kCodecH264"/>