Rework requests in execution domain

editor/tools/plugins/com.google.dart.server/src/com/google/dart/server/generated/types/RequestErrorCode.java

 /*
  * Copyright (c) 2014, the Dart project authors.
  *
  * Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
  * in compliance with the License. You may obtain a copy of the License at
  *
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Unless required by applicable law or agreed to in writing, software distributed under the License
  * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
@@ skipping 24 matching lines @@
    */
   public static final String FORMAT_INVALID_FILE = "FORMAT_INVALID_FILE";
 
   /**
    * An "analysis.getErrors" request specified a FilePath which does not match a file currently
    * subject to analysis.
    */
   public static final String GET_ERRORS_INVALID_FILE = "GET_ERRORS_INVALID_FILE";
 
   /**
+   * The context root used to create an execution context does not exist.
+   */
+  public static final String INVALID_EXECUTION_CONTEXT = "INVALID_EXECUTION_CONTEXT";
+
+  /**
    * An analysis.updateContent request contained a ChangeContentOverlay object which can't be
    * applied, due to an edit having an offset or length that is out of range.
    */
   public static final String INVALID_OVERLAY_CHANGE = "INVALID_OVERLAY_CHANGE";
 
   /**
    * One of the method parameters was invalid.
    */
   public static final String INVALID_PARAMETER = "INVALID_PARAMETER";
 
@@ skipping 45 matching lines @@
   public static final String UNKNOWN_REQUEST = "UNKNOWN_REQUEST";
 
   /**
    * The analysis server was requested to perform an action which is not supported.
    *
    * This is a legacy error; it will be removed before the API reaches version 1.0.
    */
   public static final String UNSUPPORTED_FEATURE = "UNSUPPORTED_FEATURE";
 
 }