| Index: extensions/common/api/_behavior_features.json
 | 
| diff --git a/extensions/common/api/_behavior_features.json b/extensions/common/api/_behavior_features.json
 | 
| index d8965fe75668798899c80d55b0ed1168bcfad31d..1bbcc513ed3d7fcb049a18fbf1990023cd940e59 100644
 | 
| --- a/extensions/common/api/_behavior_features.json
 | 
| +++ b/extensions/common/api/_behavior_features.json
 | 
| @@ -47,5 +47,12 @@
 | 
|        "B11A93E7E5B541F8010245EBDE2C74647D6C14B9",  // http://crbug.com/505879
 | 
|        "FA01E0B81978950F2BC5A50512FD769725F57510"   // http://crbug.com/505879
 | 
|      ]
 | 
| +  },
 | 
| +  "zoom_without_bubble": {
 | 
| +    "channel": "stable",
 | 
| +    "extension_types": "all",
 | 
| +    "whitelist": [
 | 
| +      "CBCC42ABED43A4B58FE3810E62AFFA010EB0349F"   // https://crbug.com/538252
 | 
| +    ]
 | 
|    }
 | 
|  }
 | 
| 
 |