Apply OwnPtr|PassOwnPtr to m_validationMessageClient and setValidationMessageClient() in Page class

Source/core/page/Page.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 133 matching lines @@
 
     PageAnimator& animator() { return m_animator; }
     Chrome& chrome() const { return *m_chrome; }
     AutoscrollController& autoscrollController() const { return *m_autoscrollController; }
     DragCaretController& dragCaretController() const { return *m_dragCaretController; }
     DragController& dragController() const { return *m_dragController; }
     FocusController& focusController() const { return *m_focusController; }
     ContextMenuController& contextMenuController() const { return *m_contextMenuController; }
     InspectorController& inspectorController() const { return *m_inspectorController; }
     PointerLockController& pointerLockController() const { return *m_pointerLockController; }
-    ValidationMessageClient* validationMessageClient() const { return m_validationMessageClient; }
-    void setValidationMessageClient(ValidationMessageClient* client) { m_validationMessageClient = client; }
+    ValidationMessageClient& validationMessageClient() const { return *m_validationMessageClient; }
+    void setValidationMessageClient(PassOwnPtr<ValidationMessageClient>);
 
     ScrollingCoordinator* scrollingCoordinator();
 
     String mainThreadScrollingReasonsAsText();
     PassRefPtr<ClientRectList> nonFastScrollableRects(const LocalFrame*);
 
     Settings& settings() const { return *m_settings; }
     BackForwardClient& backForward() const { return *m_backForwardClient; }
 
     UseCounter& useCounter() { return m_useCounter; }
@@ skipping 85 matching lines @@
 
     const OwnPtr<HistoryController> m_historyController;
     const OwnPtr<UndoStack> m_undoStack;
 
     RefPtr<LocalFrame> m_mainFrame;
 
     mutable RefPtr<PluginData> m_pluginData;
 
     BackForwardClient* m_backForwardClient;
     EditorClient* const m_editorClient;
-    ValidationMessageClient* m_validationMessageClient;
     SpellCheckerClient* const m_spellCheckerClient;
     StorageClient* m_storageClient;
+    OwnPtr<ValidationMessageClient> m_validationMessageClient;
 
     UseCounter m_useCounter;
 
     int m_subframeCount;
     bool m_openedByDOM;
 
     bool m_tabKeyCyclesThroughElements;
     bool m_defersLoading;
 
     float m_pageScaleFactor;
@@ skipping 14 matching lines @@
     HashSet<MultisamplingChangedObserver*> m_multisamplingChangedObservers;
 
     // A pointer to all the interfaces provided to in-process Frames for this Page.
     // FIXME: Most of the members of Page should move onto FrameHost.
     OwnPtr<FrameHost> m_frameHost;
 };
 
 } // namespace WebCore
 
 #endif // Page_h