MacViews: Implement Full Keyboard Access.

ui/views/view.h

Index: ui/views/view.h
diff --git a/ui/views/view.h b/ui/views/view.h
index 9412b29396a7cf4229c9e644f769403e126645b3..dfe0292d19ffe598fbdcf7287b1fefd67f0e6bf1 100644
--- a/ui/views/view.h
+++ b/ui/views/view.h
@@ -1149,6 +1149,11 @@ class VIEWS_EXPORT View : public ui::LayerDelegate,
   // 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();