Fix missing package qualifier for typedefs

pkg/docgen/lib/docgen.dart

Index: pkg/docgen/lib/docgen.dart
diff --git a/pkg/docgen/lib/docgen.dart b/pkg/docgen/lib/docgen.dart
index 9363b5fd59e9d00330df1c643933c798d9af87c4..960702e1efd5bdb6dc80cc15d69774ba81afada8 100644
--- a/pkg/docgen/lib/docgen.dart
+++ b/pkg/docgen/lib/docgen.dart
@@ -1355,6 +1355,8 @@ abstract class OwnedIndexable extends Indexable {
   String get docName => owner.docName + '.' + dart2js_util.nameOf(mirror);
 
   OwnedIndexable(DeclarationMirror mirror, this.owner) : super(mirror);
+
+  String get packagePrefix => owner.packagePrefix;
 }
 
 /// A class containing contents of a Dart class.
@@ -1451,8 +1453,6 @@ class Class extends OwnedIndexable implements Comparable {
     interfaces.forEach((interface) => addInherited(interface));
   }
 
-  String get packagePrefix => owner.packagePrefix;
-
   String _lookupInClassAndSuperclasses(String name) {
     var lookupFunc = Indexable.determineLookupFunc(name);
     var classScope = this;
@@ -1697,8 +1697,6 @@ class Variable extends OwnedIndexable {
     'annotations': annotations.map((a) => a.toMap()).toList()
   };
 
-  String get packagePrefix => owner.packagePrefix;
-
   String get typeName => 'property';
 
   get comment {
@@ -1769,8 +1767,6 @@ class Method extends OwnedIndexable {
     annotations = _createAnnotations(mirror, _getOwningLibrary(owner));
   }
 
-  String get packagePrefix => owner.packagePrefix;
-
   Method get originallyInheritedFrom => methodInheritedFrom == null ?
       this : methodInheritedFrom.originallyInheritedFrom;