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..fc0e45b05747a4310fc258a9c344493fa79e8eb5 100644
--- a/Source/core/page/EventHandler.cpp
+++ b/Source/core/page/EventHandler.cpp
@@ -2053,11 +2053,12 @@ bool EventHandler::handleMouseFocus(const MouseEventWithHitTestResults& targeted
     // be focused if the user does a mouseup over it, however, because the
     // 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;
+    if (element && m_frame->selection().isRange()) {
+        if (Range::isNodeFullySelected(element, m_frame->selection().toNormalizedRange().get())
+            && element->isDescendantOf(m_frame->document()->focusedElement()))
+            return false;
+    }
+
 
     // Only change the focus when clicking scrollbars if it can transfered to a
     // mouse focusable node.