Fix toolbar keyboard accessibility on Views (alternative impl).

ui/views/focus/focus_search.h

 // Copyright (c) 2011 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_FOCUS_FOCUS_SEARCH_H_
 #define UI_VIEWS_FOCUS_FOCUS_SEARCH_H_
 
 #include "ui/views/view.h"
 
 namespace views {
@@ skipping 50 matching lines @@
   // - |focus_traversable_view| is set to the view associated with the
   //   FocusTraversable set in the previous parameter (it is used as the
   //   starting view when looking for the next focusable view).
   virtual View* FindNextFocusableView(View* starting_view,
                                       bool reverse,
                                       Direction direction,
                                       bool check_starting_view,
                                       FocusTraversable** focus_traversable,
                                       View** focus_traversable_view);
 
+ protected:
+  // Get the parent, but stay within the root. Returns NULL if asked for
+  // the parent of |root_|. Subclasses can override this if they need custom
+  // focus search behavior.
+  virtual View* GetParent(View* v);
+
+  // Returns true if |v| is contained within the hierarchy rooted at |root|.
+  // Subclasses can override this if they need custom focus search behavior.
+  virtual bool Contains(View* root, const View* v);
+
+  View* root() const { return root_; }
+
  private:
   // Convenience method that returns true if a view is focusable and does not
   // belong to the specified group.
   bool IsViewFocusableCandidate(View* v, int skip_group_id);
 
   // Convenience method; returns true if a view is not NULL and is focusable
   // (checking IsAccessibilityFocusable() if |accessibility_mode_| is true).
   bool IsFocusable(View* v);
 
   // Returns the view selected for the group of the selected view. If the view
   // does not belong to a group or if no view is selected in the group, the
   // specified view is returned.
   View* FindSelectedViewForGroup(View* view);
 
-  // Get the parent, but stay within the root. Returns NULL if asked for
-  // the parent of root_.
-  View* GetParent(View* view);
-
   // Returns the next focusable view or view containing a FocusTraversable
   // (NULL if none was found), starting at the starting_view.
   // |check_starting_view|, |can_go_up| and |can_go_down| controls the
   // traversal of the views hierarchy. |skip_group_id| specifies a group_id,
   // -1 means no group. All views from a group are traversed in one pass.
   View* FindNextFocusableViewImpl(View* starting_view,
                                   bool check_starting_view,
                                   bool can_go_up,
                                   bool can_go_down,
                                   int skip_group_id,
@@ skipping 12 matching lines @@
   View* root_;
   bool cycle_;
   bool accessibility_mode_;
 
   DISALLOW_COPY_AND_ASSIGN(FocusSearch);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_FOCUS_FOCUS_SEARCH_H_