Fix for file to URI mapping.

pkg/analysis_server/lib/src/domain_execution.dart

 // Copyright (c) 2014, 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 domain.execution;
 
 import 'dart:async';
 import 'dart:collection';
 
 import 'package:analysis_server/src/analysis_server.dart';
@@ skipping 87 matching lines @@
           'There is no execution context with an id of $contextId');
     }
     AnalysisContext context = server.getAnalysisContext(path);
     if (params.file != null) {
       if (params.uri != null) {
         return new Response.invalidParameter(
             request,
             'file',
             'Either file or uri must be provided, but not both');
       }
-      Source source = server.getSource(path);
+      Source source = server.getSource(params.file);
       String uri = context.sourceFactory.restoreUri(source).toString();
       return new ExecutionMapUriResult(uri: uri).toResponse(request.id);
     } else if (params.uri != null) {
       Source source = context.sourceFactory.forUri(params.uri);
       String file = source.fullName;
       return new ExecutionMapUriResult(file: file).toResponse(request.id);
     }
     return new Response.invalidParameter(
         request,
         'file',
@@ skipping 100 matching lines @@
     if (_isInAnalysisRoot(filePath)) {
       server.sendNotification(
           new ExecutionLaunchDataParams(filePath, kind: kind).toNotification());
     }
   }
 
   static List<String> _getFullNames(List<Source> sources) {
     return sources.map((Source source) => source.fullName).toList();
   }
 }