First step to move common accessibility code out of content.

ui/accessibility/ax_enums.h

Index: ui/accessibility/ax_enums.h
diff --git a/ui/accessibility/ax_enums.h b/ui/accessibility/ax_enums.h
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+// Copyright (c) 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 UI_ACCESSIBILITY_AX_ROLES_H_
+#define UI_ACCESSIBILITY_AX_ROLES_H_
+
+// These should be kept in sync with third_party/WebKit/public/web/WebAXEnums.h
+// until the Chromium and Blink trees are merged.
+enum AXRole {
+  AX_ROLE_ALERT_DIALOG = 1,
+  AX_ROLE_ALERT,
+  AX_ROLE_ANNOTATION,
+  AX_ROLE_APPLICATION,
+  AX_ROLE_ARTICLE,
+  AX_ROLE_BANNER,
+  AX_ROLE_BROWSER,
+  AX_ROLE_BUSY_INDICATOR,
+  AX_ROLE_BUTTON,
+  AX_ROLE_CANVAS,
+  AX_ROLE_CELL,
+  AX_ROLE_CHECK_BOX,
+  AX_ROLE_COLOR_WELL,
+  AX_ROLE_COLUMN_HEADER,
+  AX_ROLE_COLUMN,
+  AX_ROLE_COMBO_BOX,
+  AX_ROLE_COMPLEMENTARY,
+  AX_ROLE_CONTENT_INFO,
+  AX_ROLE_DEFINITION,
+  AX_ROLE_DESCRIPTION_LIST_DETAIL,
+  AX_ROLE_DESCRIPTION_LIST_TERM,
+  AX_ROLE_DIALOG,
+  AX_ROLE_DIRECTORY,
+  AX_ROLE_DISCLOSURE_TRIANGLE,
+  AX_ROLE_DIV,
+  AX_ROLE_DOCUMENT,
+  AX_ROLE_DRAWER,
+  AX_ROLE_EDITABLE_TEXT,
+  AX_ROLE_FOOTER,
+  AX_ROLE_FORM,
+  AX_ROLE_GRID,
+  AX_ROLE_GROUP,
+  AX_ROLE_GROW_AREA,
+  AX_ROLE_HEADING,
+  AX_ROLE_HELP_TAG,
+  AX_ROLE_HORIZONTAL_RULE,
+  AX_ROLE_IGNORED,
+  AX_ROLE_IMAGE_MAP_LINK,
+  AX_ROLE_IMAGE_MAP,
+  AX_ROLE_IMAGE,
+  AX_ROLE_INCREMENTOR,
+  AX_ROLE_INLINE_TEXT_BOX,
+  AX_ROLE_LABEL,
+  AX_ROLE_LEGEND,
+  AX_ROLE_LINK,
+  AX_ROLE_LIST_BOX_OPTION,
+  AX_ROLE_LIST_BOX,
+  AX_ROLE_LIST_ITEM,
+  AX_ROLE_LIST_MARKER,
+  AX_ROLE_LIST,
+  AX_ROLE_LOG,
+  AX_ROLE_MAIN,
+  AX_ROLE_MARQUEE,
+  AX_ROLE_MATH_ELEMENT,
+  AX_ROLE_MATH,
+  AX_ROLE_MATTE,
+  AX_ROLE_MENU_BAR,
+  AX_ROLE_MENU_BUTTON,
+  AX_ROLE_MENU_ITEM,
+  AX_ROLE_MENU_LIST_OPTION,
+  AX_ROLE_MENU_LIST_POPUP,
+  AX_ROLE_MENU,
+  AX_ROLE_NAVIGATION,
+  AX_ROLE_NOTE,
+  AX_ROLE_OUTLINE,
+  AX_ROLE_PARAGRAPH,
+  AX_ROLE_POP_UP_BUTTON,
+  AX_ROLE_PRESENTATIONAL,
+  AX_ROLE_PROGRESS_INDICATOR,
+  AX_ROLE_RADIO_BUTTON,
+  AX_ROLE_RADIO_GROUP,
+  AX_ROLE_REGION,
+  AX_ROLE_ROOT_WEB_AREA,
+  AX_ROLE_ROW_HEADER,
+  AX_ROLE_ROW,
+  AX_ROLE_RULER_MARKER,
+  AX_ROLE_RULER,
+  AX_ROLE_SVG_ROOT,
+  AX_ROLE_SCROLL_AREA,
+  AX_ROLE_SCROLL_BAR,
+  AX_ROLE_SEAMLESS_WEB_AREA,
+  AX_ROLE_SEARCH,
+  AX_ROLE_SHEET,
+  AX_ROLE_SLIDER,
+  AX_ROLE_SLIDER_THUMB,
+  AX_ROLE_SPIN_BUTTON_PART,
+  AX_ROLE_SPIN_BUTTON,
+  AX_ROLE_SPLIT_GROUP,
+  AX_ROLE_SPLITTER,
+  AX_ROLE_STATIC_TEXT,
+  AX_ROLE_STATUS,
+  AX_ROLE_SYSTEM_WIDE,
+  AX_ROLE_TAB_GROUP,
+  AX_ROLE_TAB_LIST,
+  AX_ROLE_TAB_PANEL,
+  AX_ROLE_TAB,
+  AX_ROLE_TABLE_HEADER_CONTAINER,
+  AX_ROLE_TABLE,
+  AX_ROLE_TEXT_AREA,
+  AX_ROLE_TEXT_FIELD,
+  AX_ROLE_TIMER,
+  AX_ROLE_TOGGLE_BUTTON,
+  AX_ROLE_TOOLBAR,
+  AX_ROLE_TREE_GRID,
+  AX_ROLE_TREE_ITEM,
+  AX_ROLE_TREE,
+  AX_ROLE_UNKNOWN,
+  AX_ROLE_USER_INTERFACE_TOOLTIP,
+  AX_ROLE_VALUE_INDICATOR,
+  AX_ROLE_WEB_AREA,
+  AX_ROLE_WINDOW
+};
+
+#endif  // UI_ACCESSIBILITY_AX_ROLES_H_