spatnav: Change the data type of distance from long long to double

Source/core/page/SpatialNavigation.h

 /*
  * Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Antonio Gomes <tonikitoo@webkit.org>
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 15 matching lines @@
 #include "platform/geometry/LayoutRect.h"
 
 #include <limits>
 
 namespace blink {
 
 class LocalFrame;
 class HTMLAreaElement;
 class HTMLFrameOwnerElement;
 
-inline long long maxDistance()
+inline double maxDistance()
 {
-    return std::numeric_limits<long long>::max();
+    return std::numeric_limits<double>::max();
 }
 
 inline int fudgeFactor()
 {
     return 2;
 }
 
 bool isSpatialNavigationEnabled(const LocalFrame*);
 
 // Spatially speaking, two given elements in a web page can be:
@@ skipping 65 matching lines @@
     bool inScrollableContainer() const { return visibleNode && enclosingScrollableBox; }
     bool isFrameOwnerElement() const { return visibleNode && visibleNode->isFrameOwnerElement(); }
     Document* document() const { return visibleNode ? &visibleNode->document() : nullptr; }
 
     // We handle differently visibleNode and FocusableNode to properly handle the areas of imagemaps,
     // where visibleNode would represent the image element and focusableNode would represent the area element.
     // In all other cases, visibleNode and focusableNode are one and the same.
     RawPtrWillBeMember<Node> visibleNode;
     RawPtrWillBeMember<Node> focusableNode;
     RawPtrWillBeMember<Node> enclosingScrollableBox;
-    long long distance;
+    double distance;
     RectsAlignment alignment;
     LayoutRect rect;
     bool isOffscreen;
     bool isOffscreenAfterScrolling;
 };
 
 bool hasOffscreenRect(Node*, FocusType = FocusTypeNone);
 bool scrollInDirection(LocalFrame*, FocusType);
 bool scrollInDirection(Node* container, FocusType);
 bool canScrollInDirection(const Node* container, FocusType);
 bool canScrollInDirection(const LocalFrame*, FocusType);
 bool canBeScrolledIntoView(FocusType, const FocusCandidate&);
 bool areElementsOnSameLine(const FocusCandidate& firstCandidate, const FocusCandidate& secondCandidate);
 void distanceDataForNode(FocusType, const FocusCandidate& current, FocusCandidate&);
 Node* scrollableEnclosingBoxOrParentFrameForNodeInDirection(FocusType, Node*);
 LayoutRect nodeRectInAbsoluteCoordinates(Node*, bool ignoreBorder = false);
 LayoutRect frameRectInAbsoluteCoordinates(LocalFrame*);
 LayoutRect virtualRectForDirection(FocusType, const LayoutRect& startingRect, LayoutUnit width = 0);
 LayoutRect virtualRectForAreaElementAndDirection(HTMLAreaElement&, FocusType);
 HTMLFrameOwnerElement* frameOwnerElement(FocusCandidate&);
 
 } // namespace blink
 
 #endif // SpatialNavigation_h