When ARIA button contains a link, label text is ignored

Source/modules/accessibility/AXNodeObject.cpp

 /*
 * Copyright (C) 2012, Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 1238 matching lines @@
     //
     // The goal is to return a reasonable title for the outer container div, because
     // it's focusable - but without making its title be the full inner text, which is
     // quite long. As a heuristic, skip links, controls, and elements that are usually
     // containers with lots of children.
 
     // Skip hidden children
     if (obj->isInertOrAriaHidden())
         return false;
 
+    // If something doesn't expose any children, then we can always take the inner text content.
+    // This is what we want when someone puts an <a> inside a <button> for example.
+    if (obj->isDescendantOfBarrenParent())
+        return true;
+
     // Skip focusable children, so we don't include the text of links and controls.
     if (obj->canSetFocusAttribute())
         return false;
 
     // Skip big container elements like lists, tables, etc.
     if (obj->isList() || obj->isAXTable() || obj->isTree() || obj->isCanvas())
         return false;
 
     return true;
 }
@@ skipping 675 matching lines @@
     float range = maxValueForRange() - minValueForRange();
     float value = valueForRange();
 
     value += range * (percentChange / 100);
     setValue(String::number(value));
 
     axObjectCache()->postNotification(node(), AXObjectCacheImpl::AXValueChanged, true);
 }
 
 } // namespace blink