Mac a11y: Add RoleDescription and Value attributes to accessibility information.

ui/accessibility/ax_view_state.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_ACCESSIBILITY_AX_VIEW_STATE_H_
 #define UI_ACCESSIBILITY_AX_VIEW_STATE_H_
 
 #include <stdint.h>
 
 #include "base/callback.h"
 #include "base/strings/string16.h"
 #include "ui/accessibility/ax_enums.h"
 #include "ui/accessibility/ax_export.h"
 
 namespace ui {
 
 ////////////////////////////////////////////////////////////////////////////////
 //
 // AXViewState
 //
 //   A cross-platform struct for storing the core accessibility information
 //   that should be provided about any UI view to assistive technology (AT).
 //
 ////////////////////////////////////////////////////////////////////////////////
 struct AX_EXPORT AXViewState {
  public:
   AXViewState();
   ~AXViewState();
 
+  // Like HasStateFlag(), but static.

[tapted, 2016/06/17 03:32:49]

HasStateFlag's is a bit "light" so it doesn't make sense to reference it here.
Perhaps

// Helper to check whether |state_flag| is set in the given |state|.

[Patti Lor, 2016/06/17 05:57:35]

Done.

+  static bool IsFlagSet(uint32_t state, ui::AXState state_flag);
+
   // Set or check bits in |state_|.
-  void AddStateFlag(ui::AXState state);
-  bool HasStateFlag(ui::AXState state) const;
+  void AddStateFlag(ui::AXState state_flag);
+  bool HasStateFlag(ui::AXState state_flag) const;
 
   // The view's state, a bitmask containing fields such as checked
   // (for a checkbox) and protected (for a password text box). This "state"
   // should not be confused with the class's name.
   uint32_t state() { return state_; }
 
   // The view's role, like button or list box.
   AXRole role;
 
   // The view's name / label.
@@ skipping 30 matching lines @@
   // should use a WeakPtr when binding the callback.
   base::Callback<void(const base::string16&)> set_value_callback;
 
  private:
   uint32_t state_;
 };
 
 }  // namespace ui
 
 #endif  // UI_ACCESSIBILITY_AX_VIEW_STATE_H_