Rename KeyLock to KeyboardLock and return enum from IPC

third_party/WebKit/public/platform/modules/keyboard_lock/keyboard_lock.mojom

 // Copyright 2017 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.
 
 module blink.mojom;
 
-// The browser side service to process navigator.requestKeyLock() and
-// navigator.cancelKeyLock() web APIs. See http://crbug.com/680809.
+enum KeyboardLockRequestResult {
+  SUCCESS = 0,
+  FAILURE = 1,  // Chrome never returns a failure.

[dcheng, 2017/05/02 07:38:16]

Remove this comment, or just remove this enum value until it's used.

[Hzj_jie, 2017/05/02 22:12:07]

I prefer to remove this value of enumeration.
Done.

+};
+
+// The browser side service to process navigator.requestKeyboardLock() and
+// navigator.cancelKeyboardLock() web APIs. See http://crbug.com/680809.
 interface KeyboardLockService {
   // Registers a set of string-formatted key codes
   // (https://www.w3.org/TR/uievents/#interface-keyboardevent) to the platform
   // dependent native API, so the web page can receive these key codes
   // thereafter.
-  // The reason will only be provided if the request is rejected.
-  // TODO(zijiehe): Update the return type once it's defined in the spec.
-  RequestKeyLock(array<string> key_codes)
-    => (bool allowed_by_user_or_browser, string reason);
+  RequestKeyboardLock(array<string> key_codes)
+    => (KeyboardLockRequestResult result);
 
   // Removes all reserved keys. This function is expected to never fail.
-  CancelKeyLock();
+  CancelKeyboardLock();
 };