Use text affinity to return correct accessible line boundaries.

third_party/WebKit/Source/web/WebAXObject.cpp

 /*
  * Copyright (C) 2009 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 835 matching lines @@
 }
 
 WebAXRole WebAXObject::role() const
 {
     if (isDetached())
         return WebAXRoleUnknown;
 
     return static_cast<WebAXRole>(m_private->roleValue());
 }
 
-void WebAXObject::selection(WebAXObject& anchorObject, int& anchorOffset,
-    WebAXObject& focusObject, int& focusOffset) const
+void WebAXObject::selection(WebAXObject& anchorObject, int& anchorOffset, WebAXTextAffinity& anchorAffinity,
+    WebAXObject& focusObject, int& focusOffset, WebAXTextAffinity& focusAffinity) const
 {
     if (isDetached()) {
         anchorObject = WebAXObject();
         anchorOffset = -1;
+        anchorAffinity = WebAXTextAffinityDownstream;
         focusObject = WebAXObject();
         focusOffset = -1;
+        focusAffinity = WebAXTextAffinityDownstream;
         return;
     }
 
     AXObject::AXRange axSelection = m_private->selection();
     anchorObject = WebAXObject(axSelection.anchorObject);
     anchorOffset = axSelection.anchorOffset;
+    anchorAffinity = static_cast<WebAXTextAffinity>(axSelection.anchorAffinity);
     focusObject = WebAXObject(axSelection.focusObject);
     focusOffset = axSelection.focusOffset;
+    focusAffinity = static_cast<WebAXTextAffinity>(axSelection.focusAffinity);
     return;
 }
 
 void WebAXObject::setSelection(const WebAXObject& anchorObject, int anchorOffset,
     const WebAXObject& focusObject, int focusOffset) const
 {
     if (isDetached())
         return;
 
-    AXObject::AXRange axSelection(anchorObject, anchorOffset,
-        focusObject, focusOffset);
+    AXObject::AXRange axSelection(anchorObject, anchorOffset, TextAffinity::Upstream,
+        focusObject, focusOffset, TextAffinity::Downstream);
     m_private->setSelection(axSelection);
     return;
 }
 
 unsigned WebAXObject::selectionEnd() const
 {
     if (isDetached())
         return 0;
 
     AXObject::AXRange axSelection = m_private->selectionUnderObject();
@@ skipping 705 matching lines @@
     m_private = object;
     return *this;
 }
 
 WebAXObject::operator AXObject*() const
 {
     return m_private.get();
 }
 
 } // namespace blink