Add an accessibility setting to expose password values.

Source/core/accessibility/AXRenderObject.cpp

 /*
 * Copyright (C) 2008 Apple 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 828 matching lines @@
     if (equalIgnoringCase(ariaOrientation, "horizontal"))
         return AccessibilityOrientationHorizontal;
     if (equalIgnoringCase(ariaOrientation, "vertical"))
         return AccessibilityOrientationVertical;
 
     return AXObject::orientation();
 }
 
 String AXRenderObject::text() const
 {
-    if (isPasswordField())
+    if (isPasswordFieldAndShouldHideValue())
         return String();
 
     return AXNodeObject::text();
 }
 
 int AXRenderObject::textLength() const
 {
     if (!isTextControl())
         return -1;
 
-    if (isPasswordField())
+    if (isPasswordFieldAndShouldHideValue())
         return -1; // need to return something distinct from 0
 
     return text().length();
 }
 
 KURL AXRenderObject::url() const
 {
     if (isAnchor() && isHTMLAnchorElement(m_renderer->node())) {
         if (HTMLAnchorElement* anchor = toHTMLAnchorElement(anchorElement()))
             return anchor->href();
@@ skipping 38 matching lines @@
     default:
         return emptyString();
     }
 }
 
 String AXRenderObject::stringValue() const
 {
     if (!m_renderer)
         return String();
 
-    if (isPasswordField())
+    if (isPasswordFieldAndShouldHideValue())
         return String();
 
     RenderBoxModelObject* cssBox = renderBoxModelObject();
 
     if (ariaRoleAttribute() == StaticTextRole) {
         String staticText = text();
         if (!staticText.length())
             staticText = textUnderElement();
         return staticText;
     }
@@ skipping 708 matching lines @@
 
 //
 // Selected text.
 //
 
 AXObject::PlainTextRange AXRenderObject::selectedTextRange() const
 {
     if (!isTextControl())
         return PlainTextRange();
 
-    if (isPasswordField())
+    if (isPasswordFieldAndShouldHideValue())
         return PlainTextRange();
 
     AccessibilityRole ariaRole = ariaRoleAttribute();
     if (isNativeTextControl() && ariaRole == UnknownRole && m_renderer->isTextControl()) {
         HTMLTextFormControlElement* textControl = toRenderTextControl(m_renderer)->textFormControlElement();
         return PlainTextRange(textControl->selectionStart(), textControl->selectionEnd() - textControl->selectionStart());
     }
 
     if (ariaRole == UnknownRole)
         return PlainTextRange();
@@ skipping 769 matching lines @@
         if (label && label->renderer()) {
             LayoutRect labelRect = axObjectCache()->getOrCreate(label)->elementRect();
             result.unite(labelRect);
         }
     }
 
     return result;
 }
 
 } // namespace blink