Add IDL and stub implementation for chrome.usersPrivate API.

chrome/common/extensions/permissions/chrome_api_permissions.cc

 // Copyright (c) 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.
 
 #include "chrome/common/extensions/permissions/chrome_api_permissions.h"
 
 #include "chrome/grit/generated_resources.h"
 #include "extensions/common/permissions/api_permission.h"
 #include "extensions/common/permissions/api_permission_set.h"
 #include "extensions/common/permissions/media_galleries_permission.h"
@@ skipping 344 matching lines @@
        IDS_EXTENSION_PROMPT_WARNING_AUTOFILL_PRIVATE,
        PermissionMessage::kAutofillPrivate},
       {APIPermission::kWebstoreWidgetPrivate,
        "webstoreWidgetPrivate",
        APIPermissionInfo::kFlagCannotBeOptional},
       {APIPermission::kPasswordsPrivate,
        "passwordsPrivate",
        APIPermissionInfo::kFlagCannotBeOptional,
        IDS_EXTENSION_PROMPT_WARNING_PASSWORDS_PRIVATE,
        PermissionMessage::kPasswordsPrivate},
+      {APIPermission::kUsersPrivate,
+       "usersPrivate",
+       APIPermissionInfo::kFlagCannotBeOptional,
+       IDS_EXTENSION_PROMPT_WARNING_USERS_PRIVATE,
+       PermissionMessage::kUsersPrivate},
 
       // Full url access permissions.
       {APIPermission::kDebugger,
        "debugger",
        APIPermissionInfo::kFlagImpliesFullURLAccess |
            APIPermissionInfo::kFlagCannotBeOptional,
        IDS_EXTENSION_PROMPT_WARNING_DEBUGGER,
        PermissionMessage::kDebugger},
       {APIPermission::kDevtools,
        "devtools",
@@ skipping 96 matching lines @@
 
 std::vector<PermissionsProvider::AliasInfo>
 ChromeAPIPermissions::GetAllAliases() const {
   // Register aliases.
   std::vector<PermissionsProvider::AliasInfo> aliases;
   aliases.push_back(PermissionsProvider::AliasInfo("tabs", kWindowsPermission));
   return aliases;
 }
 
 }  // namespace extensions