More explicit LayoutUnit conversions

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 2341 matching lines @@
         referencePoint.move(currentOffset);
         currContainer = nextContainer;
     } while (currContainer != ancestorContainer);
 
     return offset;
 }
 
 LayoutRect LayoutObject::localCaretRect(InlineBox*, int, LayoutUnit* extraWidthToEndOfLine)
 {
     if (extraWidthToEndOfLine)
-        *extraWidthToEndOfLine = 0;
+        *extraWidthToEndOfLine = LayoutUnit();
 
     return LayoutRect();
 }
 
 void LayoutObject::computeLayerHitTestRects(LayerHitTestRects& layerRects) const
 {
     // Figure out what layer our container is in. Any offset (or new layer) for this
     // layoutObject within it's container will be applied in addLayerHitTestRects.
     LayoutPoint layerOffset;
     const PaintLayer* currentLayer = nullptr;
@@ skipping 1191 matching lines @@
         const blink::LayoutObject* root = object1;
         while (root->parent())
             root = root->parent();
         root->showLayoutTreeAndMark(object1, "*", object2, "-", 0);
     } else {
         fprintf(stderr, "Cannot showLayoutTree. Root is (nil)\n");
     }
 }
 
 #endif