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

tests/corelib/indexed_list_access_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.
 
 // Check that indexed access to lists throws correct exception if index
 // is not int.
 
 main() {
   checkList(new List(10));
   var growable = new List();
@@ skipping 14 matching lines @@
      putIt(list, 1);
      getIt(list, 1);
   }
   Expect.isTrue(checkCatch(getIt, list, "hi"));
   Expect.isTrue(checkCatch(putIt, list, "hi"));
 }
 
 checkCatch(var f, var list, var index) {
   try {
     f(list, index);
-  } catch (IllegalArgumentException e) {
+  } on IllegalArgumentException catch (e) {
     return true;
-  } catch (TypeError t) {
+  } on TypeError catch (t) {
     return true;  // thrown in type checked mode.
   }
   return false;
 }
 
 
 getIt(var a, var i) {
   return a[i];
 }
 
 
 putIt(var a, var i) {
   a[i] = null;
 }