Make String.charCodes a getter.

pkg/intl/lib/number_format.dart

Index: pkg/intl/lib/number_format.dart
diff --git a/pkg/intl/lib/number_format.dart b/pkg/intl/lib/number_format.dart
index 4ca3eb66ab1fe55c15235b3dda9a2d2353e31c3a..00373d280b9efe85194487f3f5f1547198d3cff4 100644
--- a/pkg/intl/lib/number_format.dart
+++ b/pkg/intl/lib/number_format.dart
@@ -169,7 +169,7 @@ class NumberFormat {
       paddingDigits.add(symbols.ZERO_DIGIT);
       intValue = intValue ~/ 10;
     }
-    var integerDigits = "${intValue}${paddingDigits}".charCodes();
+    var integerDigits = "${intValue}${paddingDigits}".charCodes;
     var digitLength = integerDigits.length;
 
     if (_hasPrintableIntegerPart(intValue)) {
@@ -191,7 +191,7 @@ class NumberFormat {
    * Format the part after the decimal place in a fixed point number.
    */
   void _formatFractionPart(String fractionPart) {
-    var fractionCodes = fractionPart.charCodes();
+    var fractionCodes = fractionPart.charCodes;
     var fractionLength = fractionPart.length;
     while (fractionPart[fractionLength - 1] == '0' &&
            fractionLength > _minimumFractionDigits + 1) {
@@ -237,7 +237,7 @@ class NumberFormat {
     for (var i = 0; i < numberOfDigits - basic.length; i++) {
       _add(symbols.ZERO_DIGIT);
     }
-    for (var x in basic.charCodes()) {
+    for (var x in basic.charCodes) {
       _addDigit(x);
     }
   }
@@ -258,7 +258,7 @@ class NumberFormat {
   }
 
   /** Returns the code point for the character '0'. */
-  int get _zero => '0'.charCodes()[0];
+  int get _zero => '0'.charCodes[0];
 
   /** Returns the code point for the locale's zero digit. */
   int get _localeZero => symbols.ZERO_DIGIT.charCodeAt(0);