Handles aria-dropeffect after getting its value from blink.

content/browser/accessibility/browser_accessibility_win.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 "content/browser/accessibility/browser_accessibility_win.h"
 
 #include <UIAutomationClient.h>
 #include <UIAutomationCoreApi.h>
 
 #include "base/strings/string_number_conversions.h"
@@ skipping 2953 matching lines @@
 
   InitRoleAndState();
 
   win_attributes_->ia2_attributes.clear();
 
   // Expose autocomplete attribute for combobox and textbox.
   StringAttributeToIA2(ui::AX_ATTR_AUTO_COMPLETE, "autocomplete");
 
   // Expose the "display" and "tag" attributes.
   StringAttributeToIA2(ui::AX_ATTR_DISPLAY, "display");
+  StringAttributeToIA2(ui::AX_ATTR_DROPEFFECT, "dropeffect");
   StringAttributeToIA2(ui::AX_ATTR_TEXT_INPUT_TYPE, "text-input-type");
   StringAttributeToIA2(ui::AX_ATTR_HTML_TAG, "tag");
   StringAttributeToIA2(ui::AX_ATTR_ROLE, "xml-roles");
 
   // Expose "level" attribute for headings, trees, etc.
   IntAttributeToIA2(ui::AX_ATTR_HIERARCHICAL_LEVEL, "level");
 
   // Expose the set size and position in set for listbox options.
   if (GetRole() == ui::AX_ROLE_LIST_BOX_OPTION &&
       GetParent() &&
@@ skipping 1105 matching lines @@
     ia2_role = ia_role;
 
   win_attributes_->ia_role = ia_role;
   win_attributes_->ia_state = ia_state;
   win_attributes_->role_name = role_name;
   win_attributes_->ia2_role = ia2_role;
   win_attributes_->ia2_state = ia2_state;
 }
 
 }  // namespace content