| Index: tools/metrics/histograms/histograms.xml | 
| diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml | 
| index a15e04d32d350529d23539e02b254e15fc637b73..0048dfae90bfc43de37f889d7621ba7a01b3572b 100644 | 
| --- a/tools/metrics/histograms/histograms.xml | 
| +++ b/tools/metrics/histograms/histograms.xml | 
| @@ -91578,6 +91578,7 @@ To add a new entry, add it with any value and run test to compute valid value. | 
| <int value="3" label="TLS 1.0"/> | 
| <int value="4" label="TLS 1.1"/> | 
| <int value="5" label="TLS 1.2"/> | 
| +  <int value="6" label="TLS 1.3"/> | 
| <int value="7" label="QUIC"/> | 
| </enum> | 
|  | 
|  |