exo: Implement support for zcr_keyboard_configuration_v1 protocol.

components/exo/keyboard_delegate.h

 // Copyright 2015 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 COMPONENTS_EXO_KEYBOARD_DELEGATE_H_
 #define COMPONENTS_EXO_KEYBOARD_DELEGATE_H_
 
 #include <vector>
 
 #include "base/time/time.h"
@@ skipping 18 matching lines @@
   virtual bool CanAcceptKeyboardEventsForSurface(Surface* surface) const = 0;
 
   // Called when keyboard focus enters a new valid target surface.
   virtual void OnKeyboardEnter(
       Surface* surface,
       const std::vector<ui::DomCode>& pressed_keys) = 0;
 
   // Called when keyboard focus leaves a valid target surface.
   virtual void OnKeyboardLeave(Surface* surface) = 0;
 
-  // Called when pkeyboard key state changed. |pressed| is true when |key|
+  // Called when keyboard key state changed. |pressed| is true when |key|
   // was pressed and false if it was released.
   virtual void OnKeyboardKey(base::TimeTicks time_stamp,
                              ui::DomCode key,
                              bool pressed) = 0;
 
   // Called when keyboard modifier state changed.
   virtual void OnKeyboardModifiers(int modifier_flags) = 0;
 
  protected:
   virtual ~KeyboardDelegate() {}
 };
 
 }  // namespace exo
 
 #endif  // COMPONENTS_EXO_KEYBOARD_DELEGATE_H_