Use server.getContainingContext() in execution domain.

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 78 matching lines @@
    */
   Response mapUri(Request request) {
     ExecutionMapUriParams params =
         new ExecutionMapUriParams.fromRequest(request);
     String contextId = params.id;
     String path = contextMap[contextId];
     if (path == null) {
       return new Response.invalidParameter(request, 'id',
           'There is no execution context with an id of $contextId');
     }
-    AnalysisContext context = server.getAnalysisContext(path);
+    AnalysisContext context = server.getContainingContext(path);

[Brian Wilkerson, 2015/05/04 20:06:19]

Why do we have both methods? They appear to be doing the same thing but in
different ways.

[scheglov, 2015/05/04 20:15:22]

Mostly for external files.
For example when we get a file from the Pub cache, we want to find it in an
AnalysisContext, even if it is not in an analysis root.

I think we don't need this for the execution domain.

     if (context == null) {
       return new Response.invalidExecutionContext(request, contextId);
     }
     String file = params.file;
     String uri = params.uri;
     if (file != null) {
       if (uri != null) {
         return new Response.invalidParameter(request, 'file',
             'Either file or uri must be provided, but not both');
       }
@@ skipping 116 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();
   }
 }