Make ActiveTabPermissionManager also grant the tabs permission.

chrome/common/extensions/api/tabs.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": "tabs",
     "dependencies": [ "extension", "windows" ],
     "types": [
       {
         "id": "Tab",
         "type": "object",
         "properties": {
           "id": {"type": "integer", "minimum": 0, "description": "The ID of the tab. Tab IDs are unique within a browser session."},
           "index": {"type": "integer", "minimum": 0, "description": "The zero-based index of the tab within its window."},
           "windowId": {"type": "integer", "minimum": 0, "description": "The ID of the window the tab is contained within."},
           "openerTabId": {"type": "integer", "minimum": 0, "optional": true, "description": "The ID of the tab that opened this tab, if any. This will only be present if the opener tab still exists."},
           "selected": {"type": "boolean", "description": "Whether the tab is selected.", "nodoc": true},
           "highlighted": {"type": "boolean", "description": "Whether the tab is highlighted."},
           "active": {"type": "boolean", "description": "Whether the tab is active in its window."},
           "pinned": {"type": "boolean", "description": "Whether the tab is pinned."},
           "url": {"type": "string", "description": "The URL the tab is displaying."},
           "title": {"type": "string", "optional": true, "description": "The title of the tab. This may not be available if the tab is loading."},
           "favIconUrl": {"type": "string", "optional": true, "description": "The URL of the tab's favicon. This may not be available if the tab is loading."},
           "status": {"type": "string", "optional": true, "description": "Either <em>loading</em> or <em>complete</em>."},
           "incognito": {"type": "boolean", "description": "Whether the tab is in an incognito window."}
         }
+      },
+      {
+        "id": "InjectDetails",
+        "type": "object",
+        "description": "Details of the script or CSS to inject. Either the code or the file property must be set, but both may not be set at the same time.",
+        "properties": {
+          "code": {"type": "string", "optional": true, "description": "JavaScript or CSS code to execute."},
+          "file": {"type": "string", "optional": true, "description": "JavaScript or CSS file to execute."},
+          "allFrames": {"type": "boolean", "optional": true, "description": "If allFrames is true, this function injects the script into all frames of current page. By default, it's false and the script is injected only into the top main frame."},
+          "runAt": {
+            "type": "string",
+            "optional": true,
+            "enum": ["document_start", "document_end", "document_idle"],
+            "description": "The soonest that the script will be injected into the tab. Defaults to \"document_idle\"."
+          }
+        }
       }
     ],
     "functions": [
       {
         "name": "get",
         "type": "function",
         "description": "Retrieves details about the specified tab.",
         "parameters": [
           {
             "type": "integer",
@@ skipping 555 matching lines @@
           }
         ]
       },
       {
         "name": "executeScript",
         "type": "function",
         "description": "Injects JavaScript code into a page. For details, see the <a href='content_scripts.html#pi'>programmatic injection</a> section of the content scripts doc.",
         "parameters": [
           {"type": "integer", "name": "tabId", "optional": true, "description": "The ID of the tab in which to run the script; defaults to the active tab of the current window."},
           {
-            "type": "object",
+            "$ref": "tabs.InjectDetails",
             "name": "details",
-            "description": "Details of the script to run. Either the code or the file property must be set, but both may not be set at the same time.",
-            "properties": {
-              "code": {"type": "string", "optional": true, "description": "JavaScript code to execute."},
-              "file": {"type": "string", "optional": true, "description": "JavaScript file to execute."},
-              "allFrames": {"type": "boolean", "optional": true, "description": "If allFrames is true, this function injects script into all frames of current page. By default, it's false and script is injected only into the top main frame."},
-              "runAt": {
-                "type": "string",
-                "optional": true,
-                "enum": ["document_start", "document_end", "document_idle"],
-                "description": "The soonest that the script will be injected into the tab. Defaults to \"document_idle\"."
-              }
-            }
+            "description": "Details of the script to run."
           },
           {
             "type": "function",
             "name": "callback",
             "optional": true,
             "description": "Called after all the JavaScript has been executed.",
             "parameters": [
               {
                 "name": "result",
                 "optional": true,
                 "type": "array",
                 "items": {"type": "any", "minimum": 0},
                 "description": "The result of the script in every injected frame."
               }
             ]
           }
         ]
       },
       {
         "name": "insertCSS",
         "type": "function",
         "description": "Injects CSS into a page. For details, see the <a href='content_scripts.html#pi'>programmatic injection</a> section of the content scripts doc.",
         "parameters": [
           {"type": "integer", "name": "tabId", "optional": true, "description": "The ID of the tab in which to insert the CSS; defaults to the active tab of the current window."},
           {
-            "type": "object",
+            "$ref": "tabs.InjectDetails",
             "name": "details",
-            "description": "Details of the CSS text to insert. Either the code or the file property must be set, but both may not be set at the same time.",
-            "properties": {
-              "code": {"type": "string", "optional": true, "description": "CSS code to be injected."},
-              "file": {"type": "string", "optional": true, "description": "CSS file to be injected."},
-              "allFrames": {"type": "boolean", "optional": true, "description": "If allFrames is true, this function injects CSS text into all frames of current page. By default, it's false and CSS is injected only into the top main frame."},
-              "runAt": {
-                "type": "string",
-                "optional": true,
-                "enum": ["document_start", "document_end", "document_idle"],
-                "description": "The soonest that the CSS will be injected into the tab. Defaults to \"document_idle\"."
-              }
-            }
+            "description": "Details of the CSS text to insert."
           },
           {
             "type": "function",
             "name": "callback",
             "optional": true,
             "description": "Called when all the CSS has been inserted.",
             "parameters": []
           }
         ]
       }
@@ skipping 228 matching lines @@
             "name": "removeInfo",
             "properties": {
               "isWindowClosing": {"type": "boolean", "description": "True when the tab is being closed because its window is being closed." }
             }
           }
         ]
       }
     ]
   }
 ]