Revert "Remove definitions from Kernel canonical names."

pkg/kernel/lib/canonical_name.dart

 // Copyright (c) 2016, 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.
 library kernel.canonical_name;
 
 import 'ast.dart';
 
 /// A string sequence that identifies a library, class, or member.
 ///
 /// Canonical names are organized in a prefix tree.  Each node knows its
@@ skipping 12 matching lines @@
 ///      Constructor:
 ///         Canonical name of enclosing class or library
 ///         "@constructors"
 ///         Qualified name
 ///
 ///      Field:
 ///         Canonical name of enclosing class or library
 ///         "@fields"
 ///         Qualified name
 ///
-///      Procedure that is not an accessor or factory:
+///      Procedure that is not an accessor:
 ///         Canonical name of enclosing class or library
 ///         "@methods"
 ///         Qualified name
 ///
 ///      Procedure that is a getter:
 ///         Canonical name of enclosing class or library
 ///         "@getters"
 ///         Qualified name
 ///
 ///      Procedure that is a setter:
 ///         Canonical name of enclosing class or library
 ///         "@setters"
 ///         Qualified name
 ///
-///      Procedure that is a factory:
-///         Canonical name of enclosing class
-///         "@factories"
-///         Qualified name
-///
 ///      Qualified name:
 ///         if private: URI of library
 ///         Name text
 ///
 /// The "qualified name" allows a member to have a name that is private to
 /// a library other than the one containing that member.
 class CanonicalName {
   final CanonicalName parent;
   final String name;
 
@@ skipping 71 matching lines @@
   String toString() => parent == null ? 'root' : '$parent::$name';
 
   Reference getReference() {
     return reference ??= (new Reference()..canonicalName = this);
   }
 
   static String getMemberQualifier(Member member) {
     if (member is Procedure) {
       if (member.isGetter) return '@getters';
       if (member.isSetter) return '@setters';
-      if (member.isFactory) return '@factories';
       return '@methods';
     }
     if (member is Field) {
       return '@fields';
     }
     if (member is Constructor) {
       return '@constructors';
     }
     throw 'Unexpected member: $member';
   }
 }