3 files changed, 8 insertions, 2 deletions
diff --git a/chrome/browser/tab_contents/constrained_window.h b/chrome/browser/tab_contents/constrained_window.h
index 3dc6592..7de2ade 100644
--- a/chrome/browser/tab_contents/constrained_window.h
+++ b/chrome/browser/tab_contents/constrained_window.h
@@ -53,6 +53,9 @@ class ConstrainedWindow {
 
   // Sets focus on the Constrained Window.
   virtual void FocusConstrainedWindow() {}
+
+ protected:
+  virtual ~ConstrainedWindow() {}
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_CONSTRAINED_WINDOW_H_
diff --git a/chrome/browser/tab_contents/render_view_host_manager.h b/chrome/browser/tab_contents/render_view_host_manager.h
index 0fa0f26..5a6e0f7 100644
--- a/chrome/browser/tab_contents/render_view_host_manager.h
+++ b/chrome/browser/tab_contents/render_view_host_manager.h
@@ -67,6 +67,9 @@ class RenderViewHostManager
 
     // Focuses the location bar.
     virtual void SetFocusToLocationBar(bool select_all) = 0;
+
+   protected:
+    virtual ~Delegate() {}
   };
 
   // Both delegate pointers must be non-NULL and are not owned by this class.
@@ -76,7 +79,7 @@ class RenderViewHostManager
   // You must call Init() before using this class.
   RenderViewHostManager(RenderViewHostDelegate* render_view_delegate,
                         Delegate* delegate);
-  ~RenderViewHostManager();
+  virtual ~RenderViewHostManager();
 
   // For arguments, see TabContents constructor.
   void Init(Profile* profile,
diff --git a/chrome/browser/tab_contents/tab_contents_delegate.h b/chrome/browser/tab_contents/tab_contents_delegate.h
index 7854003..fdd0964 100644
--- a/chrome/browser/tab_contents/tab_contents_delegate.h
+++ b/chrome/browser/tab_contents/tab_contents_delegate.h
@@ -276,7 +276,7 @@ class TabContentsDelegate : public AutomationResourceRoutingDelegate {
   virtual void ContentTypeChanged(TabContents* source);
 
  protected:
-  ~TabContentsDelegate();
+  virtual ~TabContentsDelegate();
 };
 
 #endif  // CHROME_BROWSER_TAB_CONTENTS_TAB_CONTENTS_DELEGATE_H_