Remove Range.compareNode() as it is not in the spec

Source/core/page/EventHandler.cpp

Index: Source/core/page/EventHandler.cpp
diff --git a/Source/core/page/EventHandler.cpp b/Source/core/page/EventHandler.cpp
index 17680fb568c943022b1296e3bf08c7893a8f51ad..bac91e47042a4fae8a4db4324f19d7f4d99e8b91 100644
--- a/Source/core/page/EventHandler.cpp
+++ b/Source/core/page/EventHandler.cpp
@@ -2054,10 +2054,14 @@ bool EventHandler::handleMouseFocus(const MouseEventWithHitTestResults& targeted
     // mouseup will set a selection inside it, which will call
     // FrameSelection::setFocusedNodeIfNeeded.
     if (element
-        && m_frame->selection().isRange()
-        && m_frame->selection().toNormalizedRange()->compareNode(element, IGNORE_EXCEPTION) == Range::NODE_INSIDE
-        && element->isDescendantOf(m_frame->document()->focusedElement()))
-        return false;
+        && m_frame->selection().isRange()) {
+        RefPtrWillBeRawPtr<Range> selectedRange = m_frame->selection().toNormalizedRange();
+        bool nodeFullySelected = Range::compareBoundaryPoints(element->parentNode(), element->nodeIndex(), selectedRange->startContainer(), selectedRange->startOffset(), IGNORE_EXCEPTION) >= 0
+            && Range::compareBoundaryPoints(element->parentNode(), element->nodeIndex() + 1, selectedRange->endContainer(), selectedRange->endOffset(), IGNORE_EXCEPTION) <= 0;
+        if (nodeFullySelected && element->isDescendantOf(m_frame->document()->focusedElement()))
+            return false;
+    }
+
 
     // Only change the focus when clicking scrollbars if it can transfered to a
     // mouse focusable node.