Replace mountType by volumeType on fileBrowserPrivate APIs.

chrome/common/extensions/api/file_browser_private.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":"fileBrowserPrivate",
     "compiler_options": {
       "implemented_in": "chrome/browser/chromeos/extensions/file_manager/file_browser_private_api_functions.h"
     },
@@ skipping 124 matching lines @@
           "mountPath": {
             "type": "string",
             "optional": true,
             "description": "Disk volume mount point path. The value corresponds to its Entry.fullPath in File API."
           },
           "sourcePath": {
             "type": "string",
             "optional": true,
             "description": "The path to the mounted device, archive file or network resource."
           },
-          "mountType": {
+          "volumeType": {
             "type": "string",
             "optional": true,
-            "enum": ["device", "file", "network"],
-            "description": "Type of the mount."
+            "enum": ["drive", "downloads", "removable", "archive"],
+            "description": "Type of the mounted volume."
           },
           "mountCondition": {
             "type": "string",
             "description": "Additional data about mount, for example, that the filesystem is not supported."
           }
         }
       },
       {
         "id": "MountPointSizeStats",
         "type": "object",
@@ skipping 119 matching lines @@
           },
           "sourcePath": {
             "type": "string",
             "description": "Path that has been mounted."
           },
           "mountPath": {
             "type": "string",
             "optional": true,
             "description": "Path that sourcePath was mounted to."
           },
-          "mountType": {
+          "volumeType": {
             "type": "string",
-            "enum": ["device", "file", "network", "drive"],
-            "description": "Type of the mount."
+            "enum": ["drive", "downloads", "removable", "archive"],
+            "description": "Type of the mounted volume."
           }
         }
       },
       {
         "id": "FileTransferStatus",
         "type": "object",
         "description": "Payload data for file transfer status updates.",
         "properties": {
           "fileUrl": {
             "type": "string",
@@ skipping 435 matching lines @@
       },
       {
         "name": "addMount",
         "description": "Mount a resource or a file.",
         "parameters": [
           {
             "name": "source",
             "type": "string",
             "description": "Mount point source. For compressed files it is relative file path within external file system"
           },
+          // TODO(hidehiko): After the refactoring, we won't need to request
+          // mounting the Drive. Then remove this param.
           {
-            "name": "mountType",
+            "name": "volumeType",
             "type": "string",
-            "enum": ["device", "file", "network", "drive"],
-            "description": "Mount point type. 'file' for compressed files"
+            "enum": ["drive", "archive"],
+            "description": "Type of the mounted volume"
           },
           {
             "name": "options",
             "type": "object",
             "additionalProperties": { "type": "any" },
             "description": "Name/value pairs for source specific options"
           },
           {
             "name": "callback",
             "type": "function",
@@ skipping 559 matching lines @@
       },
       {
         "name": "onDriveConnectionStatusChanged",
         "type": "function",
         "description": "Fired when the active network connection state changes. The network connection state can be retrieved via 'getDriveConnectionState'.",
         "parameters": []
       }
     ]
   }
 ]