[System-Keyboard-Lock] Forward navigator functions to RenderFrameHost

third_party/WebKit/Source/modules/keyboard_lock/NavigatorKeyboardLock.idl

+// 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.
+
+// https://rawgit.com/w3c/keyboard-lock/gh-pages/index.html.
+// TODO(zijiehe, garykac): Update the spec to match the implementation.
+// 1. "System" should be removed from both the function names: these functions
+//    are not for system keys or key combinations only.
+//    See https://github.com/w3c/keyboard-lock/issues/6
+// 2. Returns Promise<void> from requestKeyLock() function: user agents can
+//    decline the request, and web page can get a notification once the
+//    requested keys should be received.
+//    See https://github.com/w3c/keyboard-lock/issues/7
+// 3. The parameter of requestKeyLock() should be
+//        optional sequence<DOMString> keyCodes = []
+//    See https://github.com/w3c/keyboard-lock/issues/21
+// 4. cancelKeyLock() function is implicitly called whenever the unloading
+//    document cleanup steps run with a document.
+//    See https://github.com/w3c/keyboard-lock/issues/22
+partial interface Navigator {
+    [SecureContext, RuntimeEnabled=KeyboardLock, CallWith=ScriptState] Promise<void> requestKeyLock(optional sequence<DOMString> keyCodes = []);
+    [SecureContext, RuntimeEnabled=KeyboardLock] void cancelKeyLock();
+};