A11y: Add/refactor methods for manipulating bitfields on AXNodeData.

ui/views/controls/textfield/textfield.cc

Index: ui/views/controls/textfield/textfield.cc
diff --git a/ui/views/controls/textfield/textfield.cc b/ui/views/controls/textfield/textfield.cc
index 99df371c04eab5caea2fe8303af99a1ee0393af8..5a32d1054be0b458c08fc0afbd96720715b59cde 100644
--- a/ui/views/controls/textfield/textfield.cc
+++ b/ui/views/controls/textfield/textfield.cc
@@ -908,11 +908,11 @@ void Textfield::GetAccessibleNodeData(ui::AXNodeData* node_data) {
                                ui::AX_SUPPORTED_ACTION_ACTIVATE);
   }
   if (read_only())
-    node_data->AddStateFlag(ui::AX_STATE_READ_ONLY);
+    node_data->AddState(ui::AX_STATE_READ_ONLY);
   else
-    node_data->AddStateFlag(ui::AX_STATE_EDITABLE);
+    node_data->AddState(ui::AX_STATE_EDITABLE);
   if (text_input_type_ == ui::TEXT_INPUT_TYPE_PASSWORD) {
-    node_data->AddStateFlag(ui::AX_STATE_PROTECTED);
+    node_data->AddState(ui::AX_STATE_PROTECTED);
     node_data->SetValue(base::string16(text().size(), '*'));
   } else {
     node_data->SetValue(text());