Fix a crash in PasswordManagerExceptionsView

chrome/browser/views/password_manager_exceptions_view.h

Index: chrome/browser/views/password_manager_exceptions_view.h
diff --git a/chrome/browser/views/password_manager_exceptions_view.h b/chrome/browser/views/password_manager_exceptions_view.h
index 1ae684c8f1922322f8ff44c73f5bddc1f5471913..0151a5b6dfadbf9cf7bcac5da8cf1a64d72f8f46 100644
--- a/chrome/browser/views/password_manager_exceptions_view.h
+++ b/chrome/browser/views/password_manager_exceptions_view.h
@@ -38,7 +38,8 @@ class PasswordManagerExceptionsTableModel : public PasswordManagerTableModel {
 class PasswordManagerExceptionsView : public views::View,
                                       public views::DialogDelegate,
                                       public views::TableViewObserver,
-                                      public views::NativeButton::Listener {
+                                      public views::NativeButton::Listener,
+                                      public PasswordManagerTableModelObserver {
  public:
   explicit PasswordManagerExceptionsView(Profile* profile);
   virtual ~PasswordManagerExceptionsView();
@@ -68,6 +69,9 @@ class PasswordManagerExceptionsView : public views::View,
   virtual void WindowClosing();
   virtual views::View* GetContentsView();
 
+  // PasswordManagerTableModelObserver implementation.
+  virtual void OnRowCountChanged(size_t rows);
+
  private:
   // Wire up buttons, the model, and the table view, and query the DB for
   // exception data tied to the given profile.
@@ -87,6 +91,8 @@ class PasswordManagerExceptionsView : public views::View,
   views::NativeButton remove_button_;
   views::NativeButton remove_all_button_;
 
+  static PasswordManagerExceptionsView* instance_;
+
   DISALLOW_EVIL_CONSTRUCTORS(PasswordManagerExceptionsView);
 };
 #endif  // CHROME_BROWSER_PASSWORD_MANAGER_EXCEPTIONS_VIEW_H__