Replace and remove JavaException(s).

pkg/analysis_server/test/completion_test_support.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 test.completion.support;
 
 import 'dart:async';
 import 'dart:collection';
 
 import 'package:analysis_server/plugin/protocol/protocol.dart';
@@ skipping 133 matching lines @@
         LocationSpec test = new LocationSpec(id);
         tests[id] = test;
         test.testLocation = index;
       } else {
         modifiedPosition = index + 1;
       }
       modifiedSource = modifiedSource.substring(0, index) +
           modifiedSource.substring(index + n);
     }
     if (modifiedSource == originalSource) {
-      throw new IllegalStateException("No tests in source: " + originalSource);
+      throw new StateError("No tests in source: " + originalSource);
     }
     for (String result in validationStrings) {
       if (result.length < 3) {
-        throw new IllegalStateException("Invalid location result: " + result);
+        throw new StateError("Invalid location result: " + result);
       }
       String id = result.substring(0, 1);
       String sign = result.substring(1, 2);
       String value = result.substring(2);
       LocationSpec test = tests[id];
       if (test == null) {
-        throw new IllegalStateException(
+        throw new StateError(
             "Invalid location result id: $id for: $result");
       }
       test.source = modifiedSource;
       if (sign == '+') {
         test.positiveResults.add(value);
       } else if (sign == '-') {
         test.negativeResults.add(value);
       } else {
         String err = "Invalid location result sign: $sign for: $result";
-        throw new IllegalStateException(err);
+        throw new StateError(err);
       }
     }
     List<String> badPoints = <String>[];
     List<String> badResults = <String>[];
     for (LocationSpec test in tests.values) {
       if (test.testLocation == -1) {
         badPoints.add(test.id);
       }
       if (test.positiveResults.isEmpty && test.negativeResults.isEmpty) {
         badResults.add(test.id);
       }
     }
     if (!(badPoints.isEmpty && badResults.isEmpty)) {
       StringBuffer err = new StringBuffer();
       if (!badPoints.isEmpty) {
         err.write("No test location for tests:");
         for (String ch in badPoints) {
           err..write(' ')..write(ch);
         }
         err.write(' ');
       }
       if (!badResults.isEmpty) {
         err.write("No results for tests:");
         for (String ch in badResults) {
           err..write(' ')..write(ch);
         }
       }
-      throw new IllegalStateException(err.toString());
+      throw new StateError(err.toString());
     }
     return tests.values.toList();
   }
 }