json_schema_compiler: any, additionalProperties, functions on types

chrome/common/extensions/api/fileBrowserPrivate.json

 [
   {
     "namespace":"fileBrowserPrivate",
     "nodoc": "true",
     "types": [
       {
         "id": "FileBrowserTask",
         "type": "object",
         "description": "Represents information about available browser tasks. A task is an abstraction of an operation that the file browser can perform over a selected file set.",
         "properties": {
@@ skipping 275 matching lines @@
         "type": "function",
         "description": "Gets Strings.",
         "parameters": [
           {
             "type": "function",
              "name": "callback",
              "parameters": [
               {
                 "name": "result",
                 "type": "object",
-                "properties": {},
                 "additionalProperties": {"type": "string"}
               }
             ]
           }
         ]
       },
       {
         "name": "addFileWatch",
         "description": "Adds file watch.",
         "parameters": [
@@ skipping 47 matching lines @@
         "parameters": [
           {
             "name": "callback",
             "type": "function",
             "optional": "false",
             "parameters": [
               {
                 "name" : "fileSystem",
                 "type": "object",
                 "optional": "true",
-                "description": "A DOMFileSystem instance for local file system access. null if the caller has no appropriate permissions."
+                "description": "A DOMFileSystem instance for local file system access. null if the caller has no appropriate permissions.",
+                "additionalProperties": {"type": "any"}
               }
             ]
           }
         ]
       },
       {
         "name": "selectFiles",
         "type": "function",
         "description": "Selects multiple files.",
         "parameters": [
@@ skipping 88 matching lines @@
           {
             "name": "mountType",
             "type": "string",
             "enum": ["device", "file", "network", "gdata"],
             "description": "Mount point type. 'file' for compressed files"
           },
           {
             "name": "options",
             "type": "object",
             "description": "Name/value pairs for source specific options",
-            "optional": "true"
+            "optional": "true",
+            "additionalProperties": {"type": "any"}
           }
         ]
       },
       {
         "name": "removeMount",
         "description": "Unmounts a mounted resource.",
         "parameters": [
           {
             "name": "mountPath",
             "type": "string",
@@ skipping 88 matching lines @@
           {
             "$ref": "FileWatchEvent",
             "name": "event",
             "description": "File watch event information."
           }
         ]
       }
     ]
   }
 ]