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

tests/corelib/core_runtime_types_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.
 
 /**
  * A test of simple runtime behavior on numbers, strings and lists with
  * a focus on both correct behavior and runtime errors.
  *
  * This file is written to use minimal type declarations to match a
  * typical dynamic language coding style.
@@ skipping 29 matching lines @@
 
   static assertListContains(List<Comparable> a, List<Comparable> b) {
     a.sort((x, y) => x.compareTo(y));
     b.sort((x, y) => x.compareTo(y));
     assertListEquals(a, b);
   }
 
   static assertTypeError(void f()) {
     try {
       f();
-    } catch (var exception) {
+    } catch (exception) {
       Expect.equals(true, (exception is TypeError) ||
                           (exception is NoSuchMethodException) ||
                           (exception is NullPointerException) ||
                           (exception is IllegalArgumentException));
       return;
     }
     Expect.equals(true, false);
   }
 
   static testBooleanOperators() {
@@ skipping 82 matching lines @@
     var y = 9;
     assertEquals(y.isEven(), false);
     assertEquals(y.isOdd(), true);
     assertEquals(y.toRadixString(2), '1001');
     assertEquals(y.toRadixString(3), '100');
     assertEquals(y.toRadixString(16), '9');
     assertEquals((0).toRadixString(16), '0');
     try {
       y.toRadixString(0);
       Expect.fail("Illegal radix 0 accepted.");
-    } catch (var e) { }
+    } catch (e) { }
     try {
       y.toRadixString(-1);
       Expect.fail("Illegal radix -1 accepted.");
-    } catch (var e) { }
+    } catch (e) { }
   }
 
   static testStringOperators() {
     var s = "abcdef";
     assertEquals(s, "abcdef");
     assertEquals(s.charCodeAt(0), 97);
     assertEquals(s[0], 'a');
     assertEquals(s.length, 6);
     assertTypeError(() { s[null]; });
     assertTypeError(() { s['hello']; });
@@ skipping 113 matching lines @@
     '${true}'.toString();
     '${false}'.toString();
     ''.toString();
     ''.endsWith('');
   }
 }
 
 main() {
   CoreRuntimeTypesTest.testMain();
 }