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

tests/standalone/io/file_invalid_arguments_test.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.
 
 #import("dart:io");
 
 class FileTest {
   static void testOpenInvalidArgs(name) {
     var file = new File(name);
     try {
       file.openSync();
       Expect.fail('exception expected');
-    } catch (var e) {
+    } catch (e) {
       Expect.isTrue(e is IllegalArgumentException);
     }
 
     var openFuture = file.open(FileMode.READ);
     openFuture.handleException((e) {
       Expect.isTrue(e is IllegalArgumentException);
       return true;
     });
     openFuture.then((opened) {
       Expect.fail('non-string name open');
     });
   }
 
   static void testExistsInvalidArgs(name) {
     var file = new File(name);
     try {
       file.existsSync();
       Expect.fail('exception expected');
-    } catch (var e) {
+    } catch (e) {
       Expect.isTrue(e is IllegalArgumentException);
     }
 
     var existsFuture = file.exists();
     existsFuture.handleException((e) {
       Expect.isTrue(e is IllegalArgumentException);
       return true;
     });
     existsFuture.then((bool) {
       Expect.fail('non-string name exists');
     });
   }
 
   static void testCreateInvalidArgs(name) {
     var file = new File(name);
     try {
       file.createSync();
       Expect.fail('exception expected');
-    } catch (var e) {
+    } catch (e) {
       Expect.isTrue(e is IllegalArgumentException);
     }
 
     var createFuture = file.create();
     createFuture.handleException((e) {
       Expect.isTrue(e is IllegalArgumentException);
       return true;
     });
     createFuture.then((ignore) => Expect.fail('non-string name exists'));
   }
 
   static void testReadListInvalidArgs(buffer, offset, length) {
     String filename = getFilename("tests/vm/data/fixed_length_file");
     var file = (new File(filename)).openSync();
     try {
       file.readListSync(buffer, offset, length);
       Expect.fail('exception expected');
-    } catch (var e) {
+    } catch (e) {
       Expect.isTrue(e is FileIOException);
       Expect.isTrue(e.toString().contains('Invalid arguments'));
     }
 
     var errors = 0;
     var readListFuture = file.readList(buffer, offset, length);
     readListFuture.handleException((e) {
       errors++;
       Expect.isTrue(e is FileIOException);
       Expect.isTrue(e.toString().contains('Invalid arguments'));
       file.close().then((ignore) {
         Expect.equals(1, errors);
       });
       return true;
     });
     readListFuture.then((bytes) {
       Expect.fail('read list invalid arguments');
     });
   }
 
   static void testWriteByteInvalidArgs(value) {
     String filename = getFilename("tests/vm/data/fixed_length_file");
     var file = (new File(filename.concat("_out"))).openSync(FileMode.WRITE);
     try {
       file.writeByteSync(value);
       Expect.fail('exception expected');
-    } catch (var e) {
+    } catch (e) {
       Expect.isTrue(e is FileIOException);
       Expect.isTrue(e.toString().contains('Invalid argument'));
     }
 
     var writeByteFuture = file.writeByte(value);
     writeByteFuture.then((ignore) {
       Expect.fail('write byte invalid argument');
     });
     writeByteFuture.handleException((s) {
       Expect.isTrue(s is FileIOException);
       Expect.isTrue(s.toString().contains('Invalid argument'));
       file.close();
       return true;
     });
   }
 
   static void testWriteListInvalidArgs(buffer, offset, bytes) {
     String filename = getFilename("tests/vm/data/fixed_length_file");
     var file = (new File(filename.concat("_out"))).openSync(FileMode.WRITE);
     try {
       file.writeListSync(buffer, offset, bytes);
       Expect.fail('exception expected');
-    } catch (var e) {
+    } catch (e) {
       Expect.isTrue(e is FileIOException);
       Expect.isTrue(e.toString().contains('Invalid arguments'));
     }
 
     var writeListFuture = file.writeList(buffer, offset, bytes);
     writeListFuture.then((ignore) {
       Expect.fail('write list invalid argument');
     });
     writeListFuture.handleException((s) {
       Expect.isTrue(s is FileIOException);
       Expect.isTrue(s.toString().contains('Invalid arguments'));
       file.close();
       return true;
     });
   }
 
   static void testWriteStringInvalidArgs(string) {
     String filename = getFilename("tests/vm/data/fixed_length_file");
     var file = new File(filename.concat("_out"));
     file.openSync(FileMode.WRITE);
     try {
       file.writeString(string);
       Expect.fail('exception expected');
-    } catch (var e) {
+    } catch (e) {
       Expect.isTrue(e is FileIOException);
       Expect.isTrue(e.toString().contains('writeString failed'));
     }
 
     var errors = 0;
     file.onError = (s) {
       errors++;
       Expect.isTrue(s.contains('writeString failed'));
     };
     var calls = 0;
     file.onNoPendingWrites = () {
       if (++calls > 1) Expect.fail('write list invalid argument');
     };
     file.writeString(string);
     file.onClosed = () {
       Expect.equals(1, errors);
     };
     file.close();
   }
 
   static void testFullPathInvalidArgs(name) {
     var file = new File(name);
     try {
       file.fullPathSync();
       Expect.fail('exception expected');
-    } catch (var e) {
+    } catch (e) {
       Expect.isTrue(e is IllegalArgumentException);
     }
 
     var fullPathFuture = file.fullPath();
     fullPathFuture.handleException((e) {
       Expect.isTrue(e is IllegalArgumentException);
       return true;
     });
     fullPathFuture.then((path) {
       Expect.fail('full path invalid argument');
@@ skipping 10 matching lines @@
   FileTest.testCreateInvalidArgs(0);
   FileTest.testReadListInvalidArgs(12, 0, 1);
   FileTest.testReadListInvalidArgs(new List(10), '0', 1);
   FileTest.testReadListInvalidArgs(new List(10), 0, '1');
   FileTest.testWriteByteInvalidArgs('asdf');
   FileTest.testWriteListInvalidArgs(12, 0, 1);
   FileTest.testWriteListInvalidArgs(new List(10), '0', 1);
   FileTest.testWriteListInvalidArgs(new List(10), 0, '1');
   FileTest.testFullPathInvalidArgs(12);
 }