Disallow cast/implicit conversion from LayoutUnit to int/unsigned

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

 /*
  * Copyright (C) 2012 Victor Carbune (victor@rosedu.org)
  *
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 195 matching lines @@
     bool switched = false;
 
     // 14. Horizontal: Let title area be a box that covers all of the video's
     // rendering area except for a height of margin at the top of the rendering
     // area and a height of margin at the bottom of the rendering area.
     // Vertical: Let title area be a box that covers all of the video’s
     // rendering area except for a width of margin at the left of the rendering
     // area and a width of margin at the right of the rendering area.
     IntRect titleArea = m_cueBox.containingBlock()->absoluteBoundingBoxRect();
     if (blink::isHorizontalWritingMode(writingMode)) {
-        titleArea.move(0, margin);
-        titleArea.contract(0, 2 * margin);
+        titleArea.move(0, margin.toInt());
+        titleArea.contract(0, (2 * margin).toInt());
     } else {
-        titleArea.move(margin, 0);
-        titleArea.contract(2 * margin, 0);
+        titleArea.move(margin.toInt(), 0);
+        titleArea.contract((2 * margin).toInt(), 0);
     }
 
     // 15. Step loop: If none of the boxes in boxes would overlap any of the
     // boxes in output, and all of the boxes in output are entirely within the
     // title area box, then jump to the step labeled done positioning below.
     while (isOutside(titleArea) || isOverlapping()) {
         // 16. Let current position score be the percentage of the area of the
         // bounding box of the boxes in boxes that is outside the title area
         // box.
         if (!shouldSwitchDirection(firstLineBox, step, margin)) {
@@ skipping 99 matching lines @@
     }
 
     // http://dev.w3.org/html5/webvtt/#dfn-apply-webvtt-cue-settings - step 13.
     if (!std::isnan(m_snapToLinesPosition))
         SnapToLinesLayouter(*this, controlsRect).layout();
     else
         repositionCueSnapToLinesNotSet();
 }
 
 } // namespace blink