| Index: tools/metrics/histograms/histograms.xml | 
| diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml | 
| index c515deec4af68af5df129d0c89ddb7837647a9c9..67f8502a1620ca1530023da3127d2a8e17021154 100644 | 
| --- a/tools/metrics/histograms/histograms.xml | 
| +++ b/tools/metrics/histograms/histograms.xml | 
| @@ -56566,8 +56566,10 @@ http://cs/file:chrome/histograms.xml - but prefer this file for new entries. | 
| <int value="10" label="kCodecPCM_S16BE"/> | 
| <int value="11" label="kCodecPCM_S24BE"/> | 
| <int value="12" label="kCodecOpus"/> | 
| +  <int value="13" label="kCodecEAC3"/> | 
| <int value="14" label="kCodecPCM_ALAW"/> | 
| <int value="15" label="kCodecALAC"/> | 
| +  <int value="16" label="kCodecAC3"/> | 
| </enum> | 
|  | 
| <enum name="AudioFramesPerBuffer" type="int"> | 
| @@ -70876,6 +70878,7 @@ To add a new entry, add it with any value and run test to compute valid value. | 
| <int value="8" label="MP3"/> | 
| <int value="9" label="OPUS"/> | 
| <int value="10" label="HEVC"/> | 
| +  <int value="11" label="AC3"/> | 
| </enum> | 
|  | 
| <enum name="MultiProfileSessionMode" type="int"> | 
|  |