Even more explicit LayoutUnit conversion

third_party/WebKit/Source/core/page/SpatialNavigation.cpp

 /*
  * Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Antonio Gomes <tonikitoo@webkit.org>
  *
  * 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
@@ skipping 176 matching lines @@
         return true;
 
     return !containerViewportRect.intersects(rect);
 }
 
 bool scrollInDirection(LocalFrame* frame, WebFocusType type)
 {
     ASSERT(frame);
 
     if (frame && canScrollInDirection(frame->document(), type)) {
-        LayoutUnit dx = 0;
-        LayoutUnit dy = 0;
+        LayoutUnit dx;
+        LayoutUnit dy;
         switch (type) {
         case WebFocusTypeLeft:
             dx = - ScrollableArea::pixelsPerLineStep();
             break;
         case WebFocusTypeRight:
             dx = ScrollableArea::pixelsPerLineStep();
             break;
         case WebFocusTypeUp:
             dy = - ScrollableArea::pixelsPerLineStep();
             break;
@@ skipping 14 matching lines @@
 bool scrollInDirection(Node* container, WebFocusType type)
 {
     ASSERT(container);
     if (container->isDocumentNode())
         return scrollInDirection(toDocument(container)->frame(), type);
 
     if (!container->layoutBox())
         return false;
 
     if (canScrollInDirection(container, type)) {
-        LayoutUnit dx = 0;
-        LayoutUnit dy = 0;
+        LayoutUnit dx;
+        LayoutUnit dy;
         switch (type) {
         case WebFocusTypeLeft:
             dx = - std::min<LayoutUnit>(ScrollableArea::pixelsPerLineStep(), container->layoutBox()->scrollLeft());
             break;
         case WebFocusTypeRight:
             ASSERT(container->layoutBox()->scrollWidth() > (container->layoutBox()->scrollLeft() + container->layoutBox()->clientWidth()));
             dx = std::min<LayoutUnit>(ScrollableArea::pixelsPerLineStep(), container->layoutBox()->scrollWidth() - (container->layoutBox()->scrollLeft() + container->layoutBox()->clientWidth()));
             break;
         case WebFocusTypeUp:
             dy = - std::min<LayoutUnit>(ScrollableArea::pixelsPerLineStep(), container->layoutBox()->scrollTop());
@@ skipping 379 matching lines @@
     LayoutRect rect = virtualRectForDirection(type, rectToAbsoluteCoordinates(area.document().frame(), area.computeRect(area.imageElement()->layoutObject())), 1);
     return rect;
 }
 
 HTMLFrameOwnerElement* frameOwnerElement(FocusCandidate& candidate)
 {
     return candidate.isFrameOwnerElement() ? toHTMLFrameOwnerElement(candidate.visibleNode) : nullptr;
 };
 
 } // namespace blink