Implement scriptBadge.requestToAct.

chrome/common/extensions/api/script_badge.json

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 [
   {
     "namespace": "scriptBadge",
     "dependencies": [ "tabs" ],
     "functions": [
       {
@@ skipping 33 matching lines @@
             "type": "function",
             "name": "callback",
             "parameters": [
               {
                 "name": "result",
                 "type": "string"
               }
             ]
           }
         ]
+      },
+      {
+        "name": "getAttention",
+        "type": "function",
+
+        "description": "Brings the script badge to the attention of the user, imploring her to click.  You should call this when you detect that you can do something to a particular tab.  Do not call this for every tab. That's tacky.  If the user clicks on the badge, the activeTab APIs become available. If the extension has already run on this tab, this call does nothing.",
+
+        "parameters": [
+          {
+            "name": "details",
+            "type": "object",
+            "properties": {
+              "tabId": {
+                "type": "integer",
+                "description": "Specify the tab to request to act on."
+              }
+            }
+          }
+        ]
       }
     ],
     "events": [
       {
         "name": "onClicked",
         "type": "function",
         "description": "Fired when a script badge icon is clicked.  This event will not fire if the script badge has a popup.",
         "parameters": [
           {
             "name": "tab",
             "$ref": "tabs.Tab"
           }
         ]
       }
     ]
   }
 ]