Better storage of HTML entities.

Source/core/html/parser/HTMLEntityTable.h

 /*
  * Copyright (C) 2010 Google, Inc. All Rights Reserved.
  *
  * 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.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 12 matching lines @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef HTMLEntityTable_h
 #define HTMLEntityTable_h
 
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
+// Member order to optimize packing. There will be thousands of these objects.
 struct HTMLEntityTableEntry {
-    LChar lastCharacter() const { return entity[length - 1]; }
+    LChar lastCharacter() const;
 
-    const LChar* entity;
-    int length;
     UChar32 firstValue;
-    UChar32 secondValue;
+    UChar secondValue; // UChar since double char sequences only use BMP chars.
+    short entityOffset;
+    short length;
 };
 
 class HTMLEntityTable {
 public:
     static const HTMLEntityTableEntry* firstEntry();
     static const HTMLEntityTableEntry* lastEntry();
 
     static const HTMLEntityTableEntry* firstEntryStartingWith(UChar);
     static const HTMLEntityTableEntry* lastEntryStartingWith(UChar);
+
+    static const LChar* entityString(const HTMLEntityTableEntry&);
 };
 
 }
 
 #endif