ImportElement/ExportElement 'uri' should be the selected URI.

pkg/analyzer/lib/src/task/dart.dart

 // Copyright (c) 2015, 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 analyzer.src.task.dart;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
@@ skipping 4133 matching lines @@
       if (uriContent != null) {
         uriContent = uriContent.trim();
         directive.uriContent = uriContent;
       }
       defaultSource = _resolveUri(isImport, uriLiteral, uriContent);
       directive.uriSource = defaultSource;
     }
 
     // Resolve all configurations and try to choose one.
     if (directive is NamespaceDirectiveImpl) {
-      Source configurationSource;
+      String configuredUri;
+      Source configuredSource;
       for (Configuration configuration in directive.configurations) {
-        Source source = _resolveUri(isImport, configuration.libraryUri,
-            configuration.libraryUri.stringValue);
+        String configurationUri = configuration.uri.stringValue;
+        Source source =
+            _resolveUri(isImport, configuration.uri, configurationUri);
         configuration.uriSource = source;
-        if (configurationSource == null) {
+        if (configuredSource == null) {
           String variableName =
               configuration.name.components.map((i) => i.name).join('.');
           String variableValue = context.declaredVariables.get(variableName);
           if (configuration.value != null &&
                   variableValue == configuration.value.stringValue ||
               variableValue == 'true') {
-            configurationSource = source;
+            configuredUri = configuration.uri.stringValue;
+            configuredSource = source;
           }
         }
       }
-      Source referencedSource = configurationSource ?? defaultSource;
-      directive.selectedSource = referencedSource;
-      return referencedSource;
+      String selectedUri = configuredUri ?? directive.uriContent;
+      Source selectedSource = configuredSource ?? defaultSource;
+      directive.selectedUri = selectedUri;
+      directive.selectedSource = selectedSource;
+      return selectedSource;
     }
     return defaultSource;
   }
 
   /**
    * Return the result of resolve the given [uriContent], reporting errors
    * against the [uriLiteral].
    */
   Source _resolveUri(
       bool isImport, StringLiteral uriLiteral, String uriContent) {
@@ skipping 2258 matching lines @@
 
   @override
   bool moveNext() {
     if (_newSources.isEmpty) {
       return false;
     }
     currentTarget = _newSources.removeLast();
     return true;
   }
 }