Introducing the activityLogPrivate.deleteActivities() API call.

chrome/common/extensions/api/activity_log_private.json

 // Copyright 2013 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": "activityLogPrivate",
     "description": "none",
     "types": [
       {
@@ skipping 62 matching lines @@
             "parameters": [
               {
                 "name": "result",
                 "$ref": "ActivityResultSet"
               }
             ]
           }
         ]
       },
       {
+        "name": "deleteActivities",
+        "type": "function",
+        "description": "Deletes activities in the ActivityLog database specified in the array of activity IDs.",
+        "parameters": [
+          {
+            "name": "activityIds",
+            "type": "array",
+            "items": { "type": "string" },
+            "description": "Erases only the activities which IDs are listed in the array."
+          }
+        ]
+      },
+      {
         "name": "deleteDatabase",
         "type": "function",
         "description": "Deletes the entire ActivityLog database.",
         "parameters": []
       },
       {
         "name": "deleteUrls",
         "type": "function",
         "description": "Delete URLs in the ActivityLog database.",
         "parameters": [
@@ skipping 15 matching lines @@
         "parameters": [
           {
             "name": "activity",
             "$ref": "ExtensionActivity"
           }
         ]
       }
     ]
   }
 ]