Make views Slider accessible on Chrome OS

chrome/browser/accessibility/accessibility_events.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/accessibility/accessibility_events.h"
 
 #include "base/values.h"
 
 #include "chrome/browser/accessibility/accessibility_extension_api_constants.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 223 matching lines @@
 const char* AccessibilityMenuItemInfo::type() const {
   return keys::kTypeMenuItem;
 }
 
 void AccessibilityMenuItemInfo::SerializeToDict(DictionaryValue *dict) const {
   AccessibilityControlInfo::SerializeToDict(dict);
   dict->SetBoolean(keys::kHasSubmenuKey, has_submenu_);
   dict->SetInteger(keys::kItemIndexKey, item_index_);
   dict->SetInteger(keys::kItemCountKey, item_count_);
 }
+
+AccessibilitySliderInfo::AccessibilitySliderInfo(Profile* profile,
+                                                 const std::string& name,
+                                                 const std::string& context,
+                                                 const std::string& value)
+    : AccessibilityControlInfo(profile, name),
+      value_(value) {
+  set_context(context);
+}
+
+const char* AccessibilitySliderInfo::type() const {
+  return keys::kTypeSlider;
+}
+
+void AccessibilitySliderInfo::SerializeToDict(DictionaryValue *dict) const {
+  AccessibilityControlInfo::SerializeToDict(dict);
+  dict->SetString(keys::kStringValueKey, value_);
+}