Code cleanup (mostly io lib and some http lib).

sdk/lib/io/file.dart

 // Copyright (c) 2013, 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.
 
 part of dart.io;
 
 /**
  * FileMode describes the modes in which a file can be opened.
  */
 class FileMode {
   /// The [FileMode] for opening a file only for reading.
   static const READ = const FileMode._internal(0);
   /// The [FileMode] for opening a file for reading and writing. The file will
   /// be overwritten. If the file does not exist, it will be created.
   static const WRITE = const FileMode._internal(1);
   /// The [FileMode] for opening a file for reading a file and writing to the
   /// end of it. If the file does not exist, it will be created.
   static const APPEND = const FileMode._internal(2);
-  const FileMode._internal(int this._mode);
   final int _mode;
+
+  const FileMode._internal(this._mode);
 }
 
 /// The [FileMode] for opening a file only for reading.
 const READ = FileMode.READ;
 /// The [FileMode] for opening a file for reading and writing. The file will be
 /// overwritten. If the file does not exist, it will be created.
 const WRITE = FileMode.WRITE;
 /// The [FileMode] for opening a file for reading a file and writing to the end
 /// of it. If the file does not exist, it will be created.
 const APPEND = FileMode.APPEND;
@@ skipping 526 matching lines @@
    * Gets the path of the file underlying this RandomAccessFile.
    */
   String get path;
 }
 
 
 class FileSystemException implements IOException {
   final String message;
   final String path;
   final OSError osError;
-  const FileSystemException([String this.message = "",
-                             String this.path = "",
-                             OSError this.osError]);
+  const FileSystemException([this.message = "", this.path = "", this.osError]);
 
   String toString() {
     StringBuffer sb = new StringBuffer();
     sb.write("FileSystemException");
     if (!message.isEmpty) {
       sb.write(": $message");
       if (path != null) {
         sb.write(", path = $path");
       }
       if (osError != null) {
         sb.write(" ($osError)");
       }
     } else if (osError != null) {
       sb.write(": osError");
       if (path != null) {
         sb.write(", path = $path");
       }
     }
     return sb.toString();
   }
 }