Add 5 experimental accessibility features on Chrome OS.

ash/default_accessibility_delegate.cc

Index: ash/default_accessibility_delegate.cc
diff --git a/ash/default_accessibility_delegate.cc b/ash/default_accessibility_delegate.cc
index f337a2eb39a3cc51ddd641446acbf76ca32c8bd0..ae1a48a41819b0405497f6a9a388a82c5a3da47d 100644
--- a/ash/default_accessibility_delegate.cc
+++ b/ash/default_accessibility_delegate.cc
@@ -16,8 +16,12 @@ DefaultAccessibilityDelegate::DefaultAccessibilityDelegate()
       large_cursor_enabled_(false),
       autoclick_enabled_(false),
       virtual_keyboard_enabled_(false),
-      accessibility_alert_(ui::A11Y_ALERT_NONE) {
-}
+      caret_highlight_enabled_(false),
+      cursor_highlight_enabled_(false),
+      focus_highligh_enabled_(false),
+      select_to_speak_enabled_(false),
+      switch_access_enabled_(false),
+      accessibility_alert_(ui::A11Y_ALERT_NONE) {}
 
 DefaultAccessibilityDelegate::~DefaultAccessibilityDelegate() {}
 
@@ -73,6 +77,46 @@ bool DefaultAccessibilityDelegate::IsVirtualKeyboardEnabled() const {
   return virtual_keyboard_enabled_;
 }
 
+void DefaultAccessibilityDelegate::SetCaretHighlightEnabled(bool enabled) {
+  caret_highlight_enabled_ = enabled;
+}
+
+bool DefaultAccessibilityDelegate::IsCaretHighlightEnabled() const {
+  return caret_highlight_enabled_;
+}
+
+void DefaultAccessibilityDelegate::SetCursorHighlightEnabled(bool enabled) {
+  cursor_highlight_enabled_ = enabled;
+}
+
+bool DefaultAccessibilityDelegate::IsCursorHighlightEnabled() const {
+  return cursor_highlight_enabled_;
+}
+
+void DefaultAccessibilityDelegate::SetFocusHighlightEnabled(bool enabled) {
+  focus_highligh_enabled_ = enabled;
+}
+
+bool DefaultAccessibilityDelegate::IsFocusHighlightEnabled() const {
+  return focus_highligh_enabled_;
+}
+
+void DefaultAccessibilityDelegate::SetSelectToSpeakEnabled(bool enabled) {
+  select_to_speak_enabled_ = enabled;
+}
+
+bool DefaultAccessibilityDelegate::IsSelectToSpeakEnabled() const {
+  return select_to_speak_enabled_;
+}
+
+void DefaultAccessibilityDelegate::SetSwitchAccessEnabled(bool enabled) {
+  switch_access_enabled_ = enabled;
+}
+
+bool DefaultAccessibilityDelegate::IsSwitchAccessEnabled() const {
+  return switch_access_enabled_;
+}
+
 bool DefaultAccessibilityDelegate::ShouldShowAccessibilityMenu() const {
   return spoken_feedback_enabled_ ||
          high_contrast_enabled_ ||