Implemented the "aria-current" state on Windows.

content/renderer/accessibility/blink_ax_enum_conversion.cc

 // 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.
 
 #include "content/renderer/accessibility/blink_ax_enum_conversion.h"
 
 #include "base/logging.h"
 
 namespace content {
 
@@ skipping 416 matching lines @@
     browser_text_style |= ui::AX_TEXT_STYLE_BOLD;
   if (text_style & blink::WebAXTextStyleItalic)
     browser_text_style |= ui::AX_TEXT_STYLE_ITALIC;
   if (text_style & blink::WebAXTextStyleUnderline)
     browser_text_style |= ui::AX_TEXT_STYLE_UNDERLINE;
   if (text_style & blink::WebAXTextStyleLineThrough)
     browser_text_style |= ui::AX_TEXT_STYLE_LINE_THROUGH;
   return static_cast<ui::AXTextStyle>(browser_text_style);
 }
 
+ui::AXAriaCurrentState AXAriaCurrentStateFromBlink(
+    blink::WebAXAriaCurrentState aria_current_state) {
+  switch (aria_current_state) {
+    case blink::WebAXAriaCurrentStateUndefined:
+      return ui::AX_ARIA_CURRENT_STATE_NONE;
+    case blink::WebAXAriaCurrentStateFalse:
+      return ui::AX_ARIA_CURRENT_STATE_FALSE;
+    case blink::WebAXAriaCurrentStateTrue:
+      return ui::AX_ARIA_CURRENT_STATE_TRUE;
+    case blink::WebAXAriaCurrentStatePage:
+      return ui::AX_ARIA_CURRENT_STATE_PAGE;
+    case blink::WebAXAriaCurrentStateStep:
+      return ui::AX_ARIA_CURRENT_STATE_STEP;
+    case blink::WebAXAriaCurrentStateLocation:
+      return ui::AX_ARIA_CURRENT_STATE_LOCATION;
+    case blink::WebAXAriaCurrentStateDate:
+      return ui::AX_ARIA_CURRENT_STATE_DATE;
+    case blink::WebAXAriaCurrentStateTime:
+      return ui::AX_ARIA_CURRENT_STATE_TIME;
+  }
+
+  NOTREACHED();
+  return ui::AX_ARIA_CURRENT_STATE_NONE;
+}
+
 ui::AXInvalidState AXInvalidStateFromBlink(
     blink::WebAXInvalidState invalid_state) {
   switch (invalid_state) {
     case blink::WebAXInvalidStateUndefined:
       return ui::AX_INVALID_STATE_NONE;
     case blink::WebAXInvalidStateFalse:
       return ui::AX_INVALID_STATE_FALSE;
     case blink::WebAXInvalidStateTrue:
       return ui::AX_INVALID_STATE_TRUE;
     case blink::WebAXInvalidStateSpelling:
       return ui::AX_INVALID_STATE_SPELLING;
     case blink::WebAXInvalidStateGrammar:
       return ui::AX_INVALID_STATE_GRAMMAR;
     case blink::WebAXInvalidStateOther:
       return ui::AX_INVALID_STATE_OTHER;
-    default:
-      NOTREACHED();
   }
 
+  NOTREACHED();
   return ui::AX_INVALID_STATE_NONE;
 }
 
 ui::AXSortDirection AXSortDirectionFromBlink(
     blink::WebAXSortDirection sort_direction) {
   switch (sort_direction) {
     case blink::WebAXSortDirectionUndefined:
       return ui::AX_SORT_DIRECTION_NONE;
     case blink::WebAXSortDirectionNone:
       return ui::AX_SORT_DIRECTION_UNSORTED;
@@ skipping 49 matching lines @@
     case blink::WebAXDescriptionFromRelatedElement:
       return ui::AX_DESCRIPTION_FROM_RELATED_ELEMENT;
     default:
       NOTREACHED();
   }
 
   return ui::AX_DESCRIPTION_FROM_UNINITIALIZED;
 }
 
 }  // namespace content.