- Change "static final" to "static const" in the lib/ directory.

lib/compiler/implementation/util/characters.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #library("characters");
 
-final int $EOF = 0;
-final int $STX = 2;
-final int $BS  = 8;
-final int $TAB = 9;
-final int $LF = 10;
-final int $VTAB = 11;
-final int $FF = 12;
-final int $CR = 13;
-final int $SPACE = 32;
-final int $BANG = 33;
-final int $DQ = 34;
-final int $HASH = 35;
-final int $$ = 36;
-final int $PERCENT = 37;
-final int $AMPERSAND = 38;
-final int $SQ = 39;
-final int $OPEN_PAREN = 40;
-final int $CLOSE_PAREN = 41;
-final int $STAR = 42;
-final int $PLUS = 43;
-final int $COMMA = 44;
-final int $MINUS = 45;
-final int $PERIOD = 46;
-final int $SLASH = 47;
-final int $0 = 48;
-final int $1 = 49;
-final int $2 = 50;
-final int $3 = 51;
-final int $4 = 52;
-final int $5 = 53;
-final int $6 = 54;
-final int $7 = 55;
-final int $8 = 56;
-final int $9 = 57;
-final int $COLON = 58;
-final int $SEMICOLON = 59;
-final int $LT = 60;
-final int $EQ = 61;
-final int $GT = 62;
-final int $QUESTION = 63;
-final int $AT = 64;
-final int $A = 65;
-final int $B = 66;
-final int $C = 67;
-final int $D = 68;
-final int $E = 69;
-final int $F = 70;
-final int $G = 71;
-final int $H = 72;
-final int $I = 73;
-final int $J = 74;
-final int $K = 75;
-final int $L = 76;
-final int $M = 77;
-final int $N = 78;
-final int $O = 79;
-final int $P = 80;
-final int $Q = 81;
-final int $R = 82;
-final int $S = 83;
-final int $T = 84;
-final int $U = 85;
-final int $V = 86;
-final int $W = 87;
-final int $X = 88;
-final int $Y = 89;
-final int $Z = 90;
-final int $OPEN_SQUARE_BRACKET = 91;
-final int $BACKSLASH = 92;
-final int $CLOSE_SQUARE_BRACKET = 93;
-final int $CARET = 94;
-final int $_ = 95;
-final int $BACKPING = 96;
-final int $a = 97;
-final int $b = 98;
-final int $c = 99;
-final int $d = 100;
-final int $e = 101;
-final int $f = 102;
-final int $g = 103;
-final int $h = 104;
-final int $i = 105;
-final int $j = 106;
-final int $k = 107;
-final int $l = 108;
-final int $m = 109;
-final int $n = 110;
-final int $o = 111;
-final int $p = 112;
-final int $q = 113;
-final int $r = 114;
-final int $s = 115;
-final int $t = 116;
-final int $u = 117;
-final int $v = 118;
-final int $w = 119;
-final int $x = 120;
-final int $y = 121;
-final int $z = 122;
-final int $OPEN_CURLY_BRACKET = 123;
-final int $BAR = 124;
-final int $CLOSE_CURLY_BRACKET = 125;
-final int $TILDE = 126;
-final int $DEL = 127;
-final int $NBSP = 160;
-final int $LS = 0x2028;
-final int $PS = 0x2029;
+const int $EOF = 0;
+const int $STX = 2;
+const int $BS  = 8;
+const int $TAB = 9;
+const int $LF = 10;
+const int $VTAB = 11;
+const int $FF = 12;
+const int $CR = 13;
+const int $SPACE = 32;
+const int $BANG = 33;
+const int $DQ = 34;
+const int $HASH = 35;
+const int $$ = 36;
+const int $PERCENT = 37;
+const int $AMPERSAND = 38;
+const int $SQ = 39;
+const int $OPEN_PAREN = 40;
+const int $CLOSE_PAREN = 41;
+const int $STAR = 42;
+const int $PLUS = 43;
+const int $COMMA = 44;
+const int $MINUS = 45;
+const int $PERIOD = 46;
+const int $SLASH = 47;
+const int $0 = 48;
+const int $1 = 49;
+const int $2 = 50;
+const int $3 = 51;
+const int $4 = 52;
+const int $5 = 53;
+const int $6 = 54;
+const int $7 = 55;
+const int $8 = 56;
+const int $9 = 57;
+const int $COLON = 58;
+const int $SEMICOLON = 59;
+const int $LT = 60;
+const int $EQ = 61;
+const int $GT = 62;
+const int $QUESTION = 63;
+const int $AT = 64;
+const int $A = 65;
+const int $B = 66;
+const int $C = 67;
+const int $D = 68;
+const int $E = 69;
+const int $F = 70;
+const int $G = 71;
+const int $H = 72;
+const int $I = 73;
+const int $J = 74;
+const int $K = 75;
+const int $L = 76;
+const int $M = 77;
+const int $N = 78;
+const int $O = 79;
+const int $P = 80;
+const int $Q = 81;
+const int $R = 82;
+const int $S = 83;
+const int $T = 84;
+const int $U = 85;
+const int $V = 86;
+const int $W = 87;
+const int $X = 88;
+const int $Y = 89;
+const int $Z = 90;
+const int $OPEN_SQUARE_BRACKET = 91;
+const int $BACKSLASH = 92;
+const int $CLOSE_SQUARE_BRACKET = 93;
+const int $CARET = 94;
+const int $_ = 95;
+const int $BACKPING = 96;
+const int $a = 97;
+const int $b = 98;
+const int $c = 99;
+const int $d = 100;
+const int $e = 101;
+const int $f = 102;
+const int $g = 103;
+const int $h = 104;
+const int $i = 105;
+const int $j = 106;
+const int $k = 107;
+const int $l = 108;
+const int $m = 109;
+const int $n = 110;
+const int $o = 111;
+const int $p = 112;
+const int $q = 113;
+const int $r = 114;
+const int $s = 115;
+const int $t = 116;
+const int $u = 117;
+const int $v = 118;
+const int $w = 119;
+const int $x = 120;
+const int $y = 121;
+const int $z = 122;
+const int $OPEN_CURLY_BRACKET = 123;
+const int $BAR = 124;
+const int $CLOSE_CURLY_BRACKET = 125;
+const int $TILDE = 126;
+const int $DEL = 127;
+const int $NBSP = 160;
+const int $LS = 0x2028;
+const int $PS = 0x2029;
 
-final int $FIRST_SURROGATE = 0xd800;
-final int $LAST_SURROGATE = 0xdfff;
-final int $LAST_CODE_POINT = 0x10ffff;
+const int $FIRST_SURROGATE = 0xd800;
+const int $LAST_SURROGATE = 0xdfff;
+const int $LAST_CODE_POINT = 0x10ffff;
 
 bool isHexDigit(int characterCode) {
   if (characterCode <= $9) return $0 <= characterCode;
   characterCode |= $a ^ $A;
   return ($a <= characterCode && characterCode <= $f);
 }
 
 int hexDigitValue(int hexDigit) {
   assert(isHexDigit(hexDigit));
   // hexDigit is one of '0'..'9', 'A'..'F' and 'a'..'f'.
   if (hexDigit <= $9) return hexDigit - $0;
   return (hexDigit | ($a ^ $A)) - ($a - 10);
 }
 
 bool isUnicodeScalarValue(int value) {
   return value < $FIRST_SURROGATE ||
       (value > $LAST_SURROGATE && value <= $LAST_CODE_POINT);
 }