Update almost all tests (except co19) to use the new try-catch syntax.

samples/calculator/tape.dart

 // Copyright (c) 2012, 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.
 
 class Tape {
   static final int OP_NOOP = 0;
   static final int OP_PLUS = 1;
   static final int OP_MINUS = 2;
   static final int OP_MULTI = 3;
   static final int OP_DIV = 4;
   static final int OP_EQUAL = 5;
   static final int OP_CLEAR = 6;
 
   Tape() {
     clearTape();
   }
 
   void addToTape(int op, String number) {
     double displayTotal;
     double numberAsValue;
 
     if (number != "." && number != "-" && number != "-.") {
       try {
         numberAsValue = Math.parseDouble(number.length == 0 ? "0" : number);
-      } on FormatException (e) {
+      } on FormatException catch (e) {
         displayError(e.toString());
         return;
       }
     } else {
       // Display just the .
       displayTotal = total;
       numberAsValue = 0.0;
     }
 
     String opAsStr;
@@ skipping 198 matching lines @@
 
   DivElement get activeInput() => window.document.query("#activeInput");
   DivElement get activeTotal() => window.document.query("#activeTotal");
 
   void clear() {
     final element = new Element.tag('div');
     element.innerHTML = tapeUI.clearCalculation();
     tapeUI.tape.elements.add(element.elements[0]);
   }
 }