Revert "Fix a ton of compiler warnings."

chrome/browser/tab_contents/render_view_host_delegate_helper.h

 // Copyright (c) 2009 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_TAB_CONTENTS_RENDER_VIEW_HOST_DELEGATE_HELPER_H_
 #define CHROME_BROWSER_TAB_CONTENTS_RENDER_VIEW_HOST_DELEGATE_HELPER_H_
 
 #include <map>
 
 #include "base/basictypes.h"
@@ skipping 10 matching lines @@
 class RenderWidgetHost;
 class RenderWidgetHostView;
 class SiteInstance;
 class TabContents;
 
 // Provides helper methods that provide common implementations of some
 // RenderViewHostDelegate::View methods.
 class RenderViewHostDelegateViewHelper {
  public:
   RenderViewHostDelegateViewHelper() {}
-  virtual ~RenderViewHostDelegateViewHelper() {}
 
   virtual void CreateNewWindow(int route_id,
                                base::WaitableEvent* modal_dialog_event,
                                Profile* profile, SiteInstance* site);
   virtual RenderWidgetHostView* CreateNewWidget(int route_id, bool activatable,
                                                 RenderProcessHost* process);
   virtual TabContents* GetCreatedWindow(int route_id);
   virtual RenderWidgetHostView* GetCreatedWidget(int route_id);
   void RenderWidgetHostDestroyed(RenderWidgetHost* host);
 
@@ skipping 18 matching lines @@
  public:
   static WebPreferences GetWebkitPrefs(PrefService* prefs, bool is_dom_ui);
 
  private:
   RenderViewHostDelegateHelper();
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewHostDelegateHelper);
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_RENDER_VIEW_HOST_DELEGATE_HELPER_H_