More explicit LayoutUnit conversions

third_party/WebKit/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 1544 matching lines @@
     int lineCount = -1;
     VisiblePosition currentPosition = position;
     VisiblePosition previousPosition;
 
     // move up until we get to the top
     // FIXME: This only takes us to the top of the rootEditableElement, not the top of the
     // top document.
     do {
         previousPosition = currentPosition;
         currentPosition = previousLinePosition(
-            currentPosition, 0, HasEditableAXRole);
+            currentPosition, LayoutUnit(), HasEditableAXRole);
         ++lineCount;
     } while (currentPosition.isNotNull()
         && !inSameLine(currentPosition, previousPosition));
 
     return lineCount;
 }
 
 bool AXObject::isARIAControl(AccessibilityRole ariaRole)
 {
     return isARIAInput(ariaRole) || ariaRole == ButtonRole
@@ skipping 125 matching lines @@
 
 DEFINE_TRACE(AXObject)
 {
     visitor->trace(m_children);
     visitor->trace(m_parent);
     visitor->trace(m_cachedLiveRegionRoot);
     visitor->trace(m_axObjectCache);
 }
 
 } // namespace blink