focus reverse traversal was not working for TextfieldViews.

views/controls/textfield/textfield.h

 // Copyright (c) 2010 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 VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_H_
 #define VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_H_
 #pragma once
 
 #include "build/build_config.h"
 
@@ skipping 226 matching lines @@
 #endif
 
   // Overridden from View:
   virtual void Layout();
   virtual gfx::Size GetPreferredSize();
   virtual bool IsFocusable() const;
   virtual void AboutToRequestFocusFromTabTraversal(bool reverse);
   virtual bool SkipDefaultKeyEventProcessing(const KeyEvent& e);
   virtual void SetEnabled(bool enabled);
   virtual void PaintFocusBorder(gfx::Canvas* canvas);
+  virtual bool OnKeyPressed(const views::KeyEvent& e);
+  virtual bool OnKeyReleased(const views::KeyEvent& e);
+  virtual void WillGainFocus();
+  virtual void DidGainFocus();
+  virtual void WillLoseFocus();
 
   // Accessibility accessors, overridden from View:
   virtual AccessibilityTypes::Role GetAccessibleRole();
   virtual AccessibilityTypes::State GetAccessibleState();
   virtual std::wstring GetAccessibleValue();
 
  protected:
   virtual void Focus();
   virtual void ViewHierarchyChanged(bool is_add, View* parent, View* child);
   virtual std::string GetClassName() const;
@@ skipping 58 matching lines @@
 
   // Text to display when empty.
   string16 text_to_display_when_empty_;
 
   DISALLOW_COPY_AND_ASSIGN(Textfield);
 };
 
 }  // namespace views
 
 #endif  // VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_H_