Add package root setting to analysis server API.

pkg/analysis_server/test/integration/integration_test_methods.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.
 //
 // This file has been automatically generated.  Please do not edit it manually.
 // To regenerate the file, use the script
 // "pkg/analysis_server/tool/spec/generate_files".
 
 /**
  * Convenience methods for running integration tests
@@ skipping 251 matching lines @@
    * Parameters
    *
    * included ( List<FilePath> )
    *
    *   A list of the files and directories that should be analyzed.
    *
    * excluded ( List<FilePath> )
    *
    *   A list of the files and directories within the included directories that
    *   should not be analyzed.
+   *
+   * packageRoots ( optional Map<FilePath, FilePath> )
+   *
+   *   A mapping from source directories to target directories that should
+   *   override the normal package: URI resolution mechanism. The analyzer will
+   *   behave as though each source directory in the map contains a special
+   *   pubspec.yaml file which resolves any package: URI to the corresponding
+   *   path within the target directory. The effect is the same as specifying
+   *   the target directory as a "--package_root" parameter to the Dart VM when
+   *   executing any Dart file inside the source directory.
+   *
+   *   If this field is absent, or the empty map is specified, then all
+   *   package: URI's are resolved the normal pubspec.yaml mechanism.
    */
-  Future sendAnalysisSetAnalysisRoots(List<String> included, List<String> excluded) {
-    var params = new AnalysisSetAnalysisRootsParams(included, excluded).toJson();
+  Future sendAnalysisSetAnalysisRoots(List<String> included, List<String> excluded, {Map<String, String> packageRoots}) {
+    var params = new AnalysisSetAnalysisRootsParams(included, excluded, packageRoots: packageRoots).toJson();
     return server.send("analysis.setAnalysisRoots", params)
         .then((result) {
       expect(result, isNull);
       return null;
     });
   }
 
   /**
    * Set the priority files to the files in the given list. A priority file is
    * a file that is given priority when scheduling which analysis work to do
@@ skipping 1057 matching lines @@
       case "execution.launchData":
         expect(params, isExecutionLaunchDataParams);
         _onExecutionLaunchData.add(new ExecutionLaunchDataParams.fromJson(decoder, 'params', params));
         break;
       default:
         fail('Unexpected notification: $event');
         break;
     }
   }
 }