1 files changed, 42 insertions, 0 deletions
diff --git a/chromium/ui/events/keyboard_hook_base.h b/chromium/ui/events/keyboard_hook_base.h
new file mode 100644
index 00000000000..428c24fa077
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+++ b/chromium/ui/events/keyboard_hook_base.h
@@ -0,0 +1,42 @@
+// Copyright 2018 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.
+
+#ifndef UI_EVENTS_KEYBOARD_HOOK_BASE_H_
+#define UI_EVENTS_KEYBOARD_HOOK_BASE_H_
+
+#include <memory>
+
+#include "base/macros.h"
+#include "ui/events/keyboard_hook.h"
+
+namespace ui {
+
+class KeyEvent;
+
+class KeyboardHookBase : public KeyboardHook {
+ public:
+  KeyboardHookBase(base::Optional<base::flat_set<int>> native_key_codes,
+                   KeyEventCallback callback);
+  ~KeyboardHookBase() override;
+
+ protected:
+  // Indicates whether |key_code| should be intercepted by the keyboard hook.
+  bool ShouldCaptureKeyEvent(int key_code) const;
+
+  // Forwards the key event using |key_event_callback_|.
+  void ForwardCapturedKeyEvent(std::unique_ptr<KeyEvent> event);
+
+ private:
+  // Used to forward key events.
+  KeyEventCallback key_event_callback_;
+
+  // The set of keys which should be intercepted by the keyboard hook.
+  base::Optional<base::flat_set<int>> key_codes_;
+
+  DISALLOW_COPY_AND_ASSIGN(KeyboardHookBase);
+};
+
+}  // namespace ui
+
+#endif  // UI_EVENTS_KEYBOARD_HOOK_BASE_H_