addMarker() optimizations.

Source/core/dom/DocumentMarker.h

 /*
  * This file is part of the DOM implementation for WebCore.
  *
  * Copyright (C) 2006 Apple Computer, Inc.
  *
  * 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.
  *
@@ skipping 20 matching lines @@
 namespace WebCore {
 
 class DocumentMarkerDetails;
 
 // A range of a node within a document that is "marked", such as the range of a misspelled word.
 // It optionally includes a description that could be displayed in the user interface.
 // It also optionally includes a flag specifying whether the match is active, which is ignored
 // for all types other than type TextMatch.
 class DocumentMarker {
 public:
+    enum MarkerTypeIndex {
+        SpellingMarkerIndex = 0,
+        GramarMarkerIndex,
+        TextMatchMarkerIndex,
+        MarkerTypeIndexesCount
+    };
+
     enum MarkerType {
-        Spelling = 1 << 0,
-        Grammar = 1 << 1,
-        TextMatch = 1 << 2
+        Spelling = 1 << SpellingMarkerIndex,
+        Grammar = 1 << GramarMarkerIndex,
+        TextMatch = 1 << TextMatchMarkerIndex
     };
 
     class MarkerTypes {
     public:
         // The constructor is intentionally implicit to allow conversion from the bit-wise sum of above types
         MarkerTypes(unsigned mask) : m_mask(mask) { }
 
         bool contains(MarkerType type) const { return m_mask & type; }
         bool intersects(const MarkerTypes& types) const { return (m_mask & types.m_mask); }
         bool operator==(const MarkerTypes& other) const { return m_mask == other.m_mask; }
@@ skipping 66 matching lines @@
 public:
     DocumentMarkerDetails() { }
     virtual ~DocumentMarkerDetails();
     virtual bool isDescription() const { return false; }
     virtual bool isTextMatch() const { return false; }
 };
 
 } // namespace WebCore
 
 #endif // DocumentMarker_h