Rename OwnPtr::clear() to reset() in core/.

third_party/WebKit/Source/core/layout/LayoutBlock.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 461 matching lines @@
 void LayoutBlock::addOverflowFromChildren()
 {
     if (childrenInline())
         toLayoutBlockFlow(this)->addOverflowFromInlineChildren();
     else
         addOverflowFromBlockChildren();
 }
 
 void LayoutBlock::computeOverflow(LayoutUnit oldClientAfterEdge, bool)
 {
-    m_overflow.clear();
+    m_overflow.reset();
 
     // Add overflow from children.
     addOverflowFromChildren();
 
     // Add in the overflow from positioned objects.
     addOverflowFromPositionedObjects();
 
     if (hasOverflowClip()) {
         // When we have overflow clip, propagate the original spillout since it will include collapsed bottom margins
         // and bottom padding.  Set the axis we don't care about to be 1, since we want this overflow to always
@@ skipping 1420 matching lines @@
         for (TrackedLayoutBoxListHashSet::const_iterator it = positionedDescendantSet->begin(); it != end; ++it) {
             LayoutBox* currBox = *it;
             ASSERT(!currBox->needsLayout());
         }
     }
 }
 
 #endif
 
 } // namespace blink