Use new try-catch syntax in runtime/, tools/, and utils/.

utils/tests/peg/peg_test.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("peg_tests");
 #import('../../peg/pegparser.dart');
 
 testParens() {
   Grammar g = new Grammar();
   Symbol a = g['A'];
@@ skipping 273 matching lines @@
   check(g, expression, 'sizeofa', 'sizeofa');
   check(g, expression, 'sizeof (a)', '[sizeof-expr,a]');
 }
 
 
 show(grammar, rule, input) {
   print('show: "$input"');
   var ast;
   try {
     ast = grammar.parse(rule, input);
-  } catch (var exception) {
+  } catch (exception) {
     if (exception is ParseError)
       ast = exception;
     else
       throw;
   }
   print('${printList(ast)}');
 }
 
 void check(grammar, rule, input, expected) {
   // If [expected] is String then the result is coerced to string.
   // If [expected] is !String, the result is compared directly.
   print('check: "$input"');
   var ast;
   try {
     ast = grammar.parse(rule, input);
-  } catch (var exception) {
+  } catch (exception) {
     ast = exception;
   }
 
   var formatted = ast;
   if (expected is String)
     formatted = printList(ast);
 
   Expect.equals(expected, formatted, "parse: $input");
 }
 
@@ skipping 17 matching lines @@
 }
 
 main() {
   testCODE();
   testParens();
   testOR();
   testTEXT();
   testBlockComment();
   testC();
 }