Move DBusClient stub implementations into separate files.

chromeos/dbus/fake_introspectable_client.h

 // Copyright 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.
 
-#ifndef CHROME_BROWSER_CHROMEOS_LOGIN_KEYBOARD_DRIVEN_OOBE_KEY_HANDLER_H_
-#define CHROME_BROWSER_CHROMEOS_LOGIN_KEYBOARD_DRIVEN_OOBE_KEY_HANDLER_H_
+#ifndef CHROMEOS_DBUS_FAKE_INTROSPECTABLE_CLIENT_H_
+#define CHROMEOS_DBUS_FAKE_INTROSPECTABLE_CLIENT_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
-#include "ui/events/event_handler.h"
+#include "chromeos/dbus/introspectable_client.h"
 
 namespace chromeos {
 
-// A class to handle special menu key for keyboard driven OOBE.
-class KeyboardDrivenOobeKeyHandler : public ui::EventHandler {
+// The IntrospectableClient implementation used on Linux desktop, which does
+// nothing.
+class FakeIntrospectableClient: public IntrospectableClient {
  public:
-  KeyboardDrivenOobeKeyHandler();
-  virtual ~KeyboardDrivenOobeKeyHandler();
+  FakeIntrospectableClient();
+  virtual ~FakeIntrospectableClient();
 
- private:
-  // ui::EventHandler
-  virtual void OnKeyEvent(ui::KeyEvent* event) OVERRIDE;
-
-  DISALLOW_COPY_AND_ASSIGN(KeyboardDrivenOobeKeyHandler);
+  virtual void Init(dbus::Bus* bus) OVERRIDE;
+  virtual void Introspect(const std::string& service_name,
+                          const dbus::ObjectPath& object_path,
+                          const IntrospectCallback& callback) OVERRIDE;
 };
 
 }  // namespace chromeos
 
-#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_KEYBOARD_DRIVEN_OOBE_KEY_HANDLER_H_
+#endif  // CHROMEOS_DBUS_INTROSPECTABLE_CLIENT_H_