MacViews: Implement Full Keyboard Access.

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 1131 matching lines @@
   // Input ---------------------------------------------------------------------
 
   virtual DragInfo* GetDragInfo();
 
   // Focus ---------------------------------------------------------------------
 
   // Returns last value passed to SetFocusable(). Use IsFocusable() to determine
   // if a view can take focus right now.
   bool focusable() const { return focusable_; }
 
+  // Returns last value passed to SetAccessibilityFocusable(). Use

[tapted, 2016/04/20 06:05:58]

(ideally this is unnecessary with something like `CanFocus` -- depends how many
things access |focusable()|

[karandeepb, 2016/05/03 02:54:13]

Removed this.

+  // IsAccessibilityFocusable() to determine if a view can take focus right now
+  // in accessibility mode.
+  bool accessibility_focusable() const { return accessibility_focusable_; }
+
   // 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 425 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_