| Index: appengine/swarming/elements/res/imp/index/swarming-index.html | 
| diff --git a/appengine/swarming/elements/res/imp/index/swarming-index.html b/appengine/swarming/elements/res/imp/index/swarming-index.html | 
| index c9ab1b0cc235f2116841285e6fd46fad3f37db96..16c41569e0399a66a90af82cab0cf6be76bf0f77 100644 | 
| --- a/appengine/swarming/elements/res/imp/index/swarming-index.html | 
| +++ b/appengine/swarming/elements/res/imp/index/swarming-index.html | 
| @@ -15,8 +15,10 @@ | 
|  | 
| <swarming-index></swarming-index> | 
|  | 
| +  This is a top-level element. | 
| + | 
| Properties: | 
| -    None.  This is a top-level element. | 
| +    client_id: String, will be set by server-side template evaluation. | 
|  | 
| Methods: | 
| None. | 
| @@ -36,6 +38,7 @@ | 
| </style> | 
|  | 
| <swarming-app | 
| +      client_id="[[client_id]]" | 
| auth_headers="{{auth_headers}}" | 
| name="Swarming" | 
| busy="[[busy]]"> | 
| @@ -60,6 +63,10 @@ | 
| is: 'swarming-index', | 
|  | 
| properties: { | 
| +        client_id: { | 
| +          type: String, | 
| +        }, | 
| + | 
| auth_headers: { | 
| type: Object, | 
| observer: "signIn", | 
|  |