Add 5 experimental accessibility features on Chrome OS.

ash/default_accessibility_delegate.h

 // Copyright 2013 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 ASH_DEFAULT_ACCESSIBILITY_DELEGATE_H_
 #define ASH_DEFAULT_ACCESSIBILITY_DELEGATE_H_
 
 #include "ash/accessibility_delegate.h"
 #include "ash/ash_export.h"
 #include "base/compiler_specific.h"
@@ skipping 12 matching lines @@
   void SetMagnifierEnabled(bool enabled) override;
   void SetMagnifierType(ui::MagnifierType type) override;
   bool IsMagnifierEnabled() const override;
   ui::MagnifierType GetMagnifierType() const override;
   void SetLargeCursorEnabled(bool enabled) override;
   bool IsLargeCursorEnabled() const override;
   void SetAutoclickEnabled(bool enabled) override;
   bool IsAutoclickEnabled() const override;
   void SetVirtualKeyboardEnabled(bool enabled) override;
   bool IsVirtualKeyboardEnabled() const override;
+  void SetCaretHighlightEnabled(bool enabled) override;
+  bool IsCaretHighlightEnabled() const override;
+  void SetCursorHighlightEnabled(bool enabled) override;
+  bool IsCursorHighlightEnabled() const override;
+  void SetFocusHighlightEnabled(bool enabled) override;
+  bool IsFocusHighlightEnabled() const override;
+  void SetSelectToSpeakEnabled(bool enabled) override;
+  bool IsSelectToSpeakEnabled() const override;
+  void SetSwitchAccessEnabled(bool enabled) override;
+  bool IsSwitchAccessEnabled() const override;
   bool ShouldShowAccessibilityMenu() const override;
   bool IsBrailleDisplayConnected() const override;
   void SilenceSpokenFeedback() const override;
   void ToggleSpokenFeedback(
       ui::AccessibilityNotificationVisibility notify) override;
   void SaveScreenMagnifierScale(double scale) override;
   double GetSavedScreenMagnifierScale() override;
   void TriggerAccessibilityAlert(ui::AccessibilityAlert alert) override;
   ui::AccessibilityAlert GetLastAccessibilityAlert() override;
   void PlayEarcon(int sound_key) override;
   base::TimeDelta PlayShutdownSound() const override;
 
  private:
-  bool spoken_feedback_enabled_;
-  bool high_contrast_enabled_;
-  bool screen_magnifier_enabled_;
-  ui::MagnifierType screen_magnifier_type_;
-  bool large_cursor_enabled_;
-  bool autoclick_enabled_;
-  bool virtual_keyboard_enabled_;
-  ui::AccessibilityAlert accessibility_alert_;
+  bool spoken_feedback_enabled_ = false;
+  bool high_contrast_enabled_ = false;
+  bool screen_magnifier_enabled_ = false;
+  ui::MagnifierType screen_magnifier_type_ = ui::kDefaultMagnifierType;
+  bool large_cursor_enabled_ = false;
+  bool autoclick_enabled_ = false;
+  bool virtual_keyboard_enabled_ = false;
+  bool caret_highlight_enabled_ = false;
+  bool cursor_highlight_enabled_ = false;
+  bool focus_highligh_enabled_ = false;
+  bool select_to_speak_enabled_ = false;
+  bool switch_access_enabled_ = false;
+  ui::AccessibilityAlert accessibility_alert_ = ui::A11Y_ALERT_NONE;
   DISALLOW_COPY_AND_ASSIGN(DefaultAccessibilityDelegate);
 };
 
 }  // namespace ash
 
 #endif  // DEFAULT_ACCESSIBILITY_DELEGATE_H_