Disallow cast/implicit conversion from LayoutUnit to int/unsigned

third_party/WebKit/Source/core/paint/PaintLayer.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@web.de>
  *   Randall Jesup <rjesup@wgate.com>
@@ skipping 1677 matching lines @@
         convertToLayerCoords(rootLayer, offset);
     }
     offset.moveBy(translationOffset);
 
     LayoutObject* containerLayoutObject = containerLayer ? containerLayer->layoutObject() : 0;
     if (layoutObject()->shouldUseTransformFromContainer(containerLayoutObject)) {
         TransformationMatrix containerTransform;
         layoutObject()->getTransformFromContainer(containerLayoutObject, toLayoutSize(offset), containerTransform);
         transformState->applyTransform(containerTransform, HitTestingTransformState::AccumulateTransform);
     } else {
-        transformState->translate(offset.x(), offset.y(), HitTestingTransformState::AccumulateTransform);
+        transformState->translate(offset.x().toInt(), offset.y().toInt(), HitTestingTransformState::AccumulateTransform);
     }
 
     return transformState;
 }
 
 
 static bool isHitCandidate(const PaintLayer* hitLayer, bool canDepthSort, double* zOffset, const HitTestingTransformState* transformState)
 {
     if (!hitLayer)
         return false;
@@ skipping 1215 matching lines @@
 
 void showLayerTree(const blink::LayoutObject* layoutObject)
 {
     if (!layoutObject) {
         fprintf(stderr, "Cannot showLayerTree. Root is (nil)\n");
         return;
     }
     showLayerTree(layoutObject->enclosingLayer());
 }
 #endif