Revert FindBarView::SearchTextfieldView deletion.

ui/views/view.h

 // Copyright (c) 2012 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 UI_VIEWS_VIEW_H_
 #define UI_VIEWS_VIEW_H_
 
 #include <algorithm>
 #include <map>
 #include <set>
@@ skipping 708 matching lines @@
     accessibility_focusable_ = accessibility_focusable;
   }
 
   // Convenience method to retrieve the FocusManager associated with the
   // Widget that contains this view.  This can return NULL if this view is not
   // part of a view hierarchy with a Widget.
   virtual FocusManager* GetFocusManager();
   virtual const FocusManager* GetFocusManager() const;
 
   // Request keyboard focus. The receiving view will become the focused view.
-  void RequestFocus();
+  virtual void RequestFocus();
 
   // Invoked when a view is about to be requested for focus due to the focus
   // traversal. Reverse is this request was generated going backward
   // (Shift-Tab).
   virtual void AboutToRequestFocusFromTabTraversal(bool reverse) {}
 
   // Invoked when a key is pressed before the key event is processed (and
   // potentially eaten) by the focus manager for tab traversal, accelerators and
   // other focus related actions.
   // The default implementation returns false, ensuring that tab traversal and
@@ skipping 758 matching lines @@
   // Belongs to this view, but it's reference-counted on some platforms
   // so we can't use a scoped_ptr. It's dereferenced in the destructor.
   NativeViewAccessibility* native_view_accessibility_;
 
   DISALLOW_COPY_AND_ASSIGN(View);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_VIEW_H_