Handling of different types of empty alt

content/browser/accessibility/browser_accessibility.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.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <iterator>
@@ skipping 1005 matching lines @@
   }
 }
 
 // Indicates if this object is at the root of a rich edit text control.
 bool BrowserAccessibility::IsRichTextControl() const {
   return HasState(ui::AX_STATE_RICHLY_EDITABLE) &&
          (!PlatformGetParent() ||
           !PlatformGetParent()->HasState(ui::AX_STATE_RICHLY_EDITABLE));
 }
 
+bool BrowserAccessibility::HasExplicitlyEmptyName() const {
+  return GetIntAttribute(ui::AX_ATTR_NAME_FROM) ==
+         ui::AX_NAME_FROM_ATTRIBUTE_EXPLICITLY_EMPTY;
+}
+
 std::string BrowserAccessibility::ComputeAccessibleNameFromDescendants() {
   std::string name;
   for (size_t i = 0; i < InternalChildCount(); ++i) {
     BrowserAccessibility* child = InternalGetChild(i);
     std::string child_name;
     if (child->GetStringAttribute(ui::AX_ATTR_NAME, &child_name)) {
       if (!name.empty())
         name += " ";
       name += child_name;
     } else if (!child->HasState(ui::AX_STATE_FOCUSABLE)) {
@@ skipping 158 matching lines @@
   return gfx::kNullAcceleratedWidget;
 }
 
 bool BrowserAccessibility::AccessibilityPerformAction(
     const ui::AXActionData& data) {
   NOTREACHED();
   return false;
 }
 
 }  // namespace content