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

Source/core/page/EventHandler.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
  *
  * 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.
@@ skipping 2035 matching lines @@
         if (element->isMouseFocusable())
             break;
     }
     ASSERT(!element || element->isMouseFocusable());
 
     // To fix <rdar://problem/4895428> Can't drag selected ToDo, we don't focus
     // a node on mouse down if it's selected and inside a focused node. It will
     // 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.
     if (!element && targetedEvent.hitTestResult().scrollbar())
         return true;
 
     if (Page* page = m_frame->page()) {
         // If focus shift is blocked, we eat the event. Note we should never
         // clear swallowEvent if the page already set it (e.g., by canceling
         // default behavior).
@@ skipping 2099 matching lines @@
 unsigned EventHandler::accessKeyModifiers()
 {
 #if OS(MACOSX)
     return PlatformEvent::CtrlKey | PlatformEvent::AltKey;
 #else
     return PlatformEvent::AltKey;
 #endif
 }
 
 } // namespace blink