Manual fixes for Dart^2 analyzer

pkg/analyzer_experimental/test/generated/test_support.dart

 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.test_support;
 
 import 'dart:collection';
 import 'dart:uri';
 import 'package:analyzer_experimental/src/generated/java_core.dart';
 import 'package:analyzer_experimental/src/generated/java_engine.dart';
 import 'package:analyzer_experimental/src/generated/java_junit.dart';
@@ skipping 651 matching lines @@
   bool exists() => true;
   bool isInSystemLibrary() {
     throw new UnsupportedOperationException();
   }
   Source resolve(String uri) {
     throw new UnsupportedOperationException();
   }
   Source resolveRelative(Uri uri) {
     throw new UnsupportedOperationException();
   }
+  UriKind get uriKind {
+    throw new UnsupportedOperationException();
+  }
 }
 
 /**
  * Wrapper around [Function] which should be called with "target" and "arguments".
  */
 class MethodTrampoline {
   int parameterCount;
   Function trampoline;
   MethodTrampoline(this.parameterCount, this.trampoline);
   Object invoke(target, List arguments) {
     if (arguments.length != parameterCount) {
       throw new IllegalArgumentException("${arguments.length} != $parameterCount");
     }
     switch (parameterCount) {
       case 0:
         return trampoline(target);
       case 1:
         return trampoline(target, arguments[0]);
       case 2:
         return trampoline(target, arguments[0], arguments[1]);
       case 3:
         return trampoline(target, arguments[0], arguments[1], arguments[2]);
       case 4:
         return trampoline(target, arguments[0], arguments[1], arguments[2], arguments[3]);
       default:
         throw new IllegalArgumentException("Not implemented for > 4 arguments");
     }
   }
 }