Rename CompositeMessage's named parent constructor.

pkg/intl/lib/src/intl_message.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.
 
 /**
  * This provides classes to represent the internal structure of the
  * arguments to `Intl.message`. It is used when parsing sources to extract
  * messages or to generate code for message substitution. Normal programs
  * using Intl would not import this library.
  *
@@ skipping 195 matching lines @@
   String get dartMessageName;
 }
 
 /**
  * This represents a message chunk that is a list of multiple sub-pieces,
  * each of which is in turn a [Message].
  */
 class CompositeMessage extends Message {
   List<Message> pieces;
 
-  CompositeMessage.parent(parent) : super(parent);
+  CompositeMessage.withParent(parent) : super(parent);
   CompositeMessage(this.pieces, ComplexMessage parent) : super(parent) {
     pieces.forEach((x) => x.parent = this);
   }
   toCode() => pieces.map((each) => each.toCode()).join('');
   toString() => "CompositeMessage(" + pieces.toString() + ")";
   String expanded([Function f = _nullTransform]) =>
       pieces.map((chunk) => f(this, chunk)).join("");
 }
 
 /** Represents a simple constant string with no dynamic elements. */
@@ skipping 407 matching lines @@
     out.write(dartMessageName);
     out.write('(');
     out.write(mainArgument);
     var args = codeAttributeNames;
     out.write(", {");
     args.fold(out, (buffer, arg) => buffer..write(
         "'$arg': '${this[arg].toCode()}', "));
     out.write("})}");
     return out.toString();
   }
-}
+}