Added ability to distinguished between rich and plain text editables on accessibility objects.

Source/modules/accessibility/AXObject.cpp

 /*
  * Copyright (C) 2008, 2009, 2011 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 729 matching lines @@
 
     if (node->hasEditableStyle())
         return true;
 
     if (!isNativeTextControl() && !isNonNativeTextControl())
         return false;
 
     return equalIgnoringCase(getAttribute(aria_multilineAttr), "true");
 }
 
+bool AXObject::hasRichText() const
+{
+    Node* node = this->node();
+    if (!node)
+        return false;
+
+    if (node->hasEditableStyle())

[dmazzoni, 2015/05/28 05:55:56]

This will return true for everything in the contenteditable subtree, is that
what you want?

Also, the spec allows contentEditable="plaintext-only" (see
http://w3c.github.io/editing-explainer/contentEditable.html), but in that case
this function would still return true, is that what you want?

Maybe Node::isContentRichlyEditable is better, but maybe add a test for that.

+        return true;
+
+    return false;
+}
+
 bool AXObject::ariaPressedIsPresent() const
 {
     return !getAttribute(aria_pressedAttr).isEmpty();
 }
 
 bool AXObject::supportsARIAAttributes() const
 {
     return isLiveRegion()
         || supportsARIADragging()
         || supportsARIADropping()
@@ skipping 708 matching lines @@
 }
 
 const AtomicString& AXObject::internalRoleName(AccessibilityRole role)
 {
     static const Vector<AtomicString>* internalRoleNameVector = createInternalRoleNameVector();
 
     return internalRoleNameVector->at(role);
 }
 
 } // namespace blink