Add 5 experimental accessibility features on Chrome OS.

chrome/common/pref_names.cc

Index: chrome/common/pref_names.cc
diff --git a/chrome/common/pref_names.cc b/chrome/common/pref_names.cc
index 32c892f975a2f81cb10eb4de62bf56f3ffa9a894..fe50243f52bac8eceadad38b5626963ab50f9a09 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -596,6 +596,21 @@ const char kAccessibilityAutoclickEnabled[] = "settings.a11y.autoclick";
 // stops and when an autoclick is triggered.
 const char kAccessibilityAutoclickDelayMs[] =
     "settings.a11y.autoclick_delay_ms";
+// A boolean pref which determines whether caret highlighting is enabled.
+const char kAccessibilityCaretHighlightEnabled[] =
+    "settings.a11y.caret_highlight";
+// A boolean pref which determines whether cursor highlighting is enabled.
+const char kAccessibilityCursorHighlightEnabled[] =
+    "settings.a11y.cursor_highlight";
+// A boolean pref which determines whether focus highlighting is enabled.
+const char kAccessibilityFocusHighlightEnabled[] =
+    "settings.a11y.focus_highlight";
+// A boolean pref which determines whether select-to-speak is enabled.
+const char kAccessibilitySelectToSpeakEnabled[] =
+    "settings.a11y.select_to_speak";
+// A boolean pref which determines whether switch access is enabled.
+const char kAccessibilitySwitchAccessEnabled[] =
+    "settings.a11y.switch_access";
 // A boolean pref which determines whether the accessibility menu shows
 // regardless of the state of a11y features.
 const char kShouldAlwaysShowAccessibilityMenu[] = "settings.a11y.enable_menu";