Remove View::focusable() - Alternate approach.

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 <stddef.h>
 
 #include <algorithm>
@@ skipping 1126 matching lines @@
   // with an associated view. Widget::ReorderNativeViews() may reorder layers
   // below layers owned by a view.
   virtual void ReorderChildLayers(ui::Layer* parent_layer);
 
   // Input ---------------------------------------------------------------------
 
   virtual DragInfo* GetDragInfo();
 
   // Focus ---------------------------------------------------------------------
 
-  // Returns true if ALWAYS is the last set focus behavior. Use IsFocusable() to
-  // determine if a view can take focus right now.
-  bool focusable() const { return focus_behavior_ == FocusBehavior::ALWAYS; }
-
   // Override to be notified when focus has changed either to or from this View.
   virtual void OnFocus();
   virtual void OnBlur();
 
   // Handle view focus/blur events for this view.
   void Focus();
   void Blur();
 
   // System events -------------------------------------------------------------
 
@@ skipping 407 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_