Quick fixes to broken tests.

dart/tests/try/poi/serialize_test.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.
 
 /// Test that poi.dart can serialize a scope.
 
 library trydart.serialize_test;
 
 import 'dart:io' show
     Platform;
@@ skipping 10 matching lines @@
 
 import 'package:expect/expect.dart';
 
 import 'package:compiler/src/elements/elements.dart' show
     Element;
 
 import 'package:compiler/src/source_file_provider.dart' show
     FormattingDiagnosticHandler;
 
 Future testInteresting() {
+  poi.cachedCompiler = null;
   Uri script = Platform.script.resolve('data/interesting.dart');
   FormattingDiagnosticHandler handler = new FormattingDiagnosticHandler();
 
   int position = 263;
 
   Future future = poi.runPoi(script, position, handler.provider, handler);
   return future.then((Element element) {
     Uri foundScript = element.compilationUnit.script.resourceUri;
     Expect.stringEquals('$script', '$foundScript');
     Expect.stringEquals('fisk', element.name);
 
     String scope = poi.scopeInformation(element, position);
     Expect.stringEquals(
         JSON.encode(expectedInteresting), JSON.encode(JSON.decode(scope)),
         scope);
     return testSubclass(handler);
   });
 }
 
 Future testSubclass(FormattingDiagnosticHandler handler) {
+  poi.cachedCompiler = null;
   int position = 506;
 
   Uri script = Platform.script.resolve('data/subclass.dart');
 
   Future future = poi.runPoi(script, position, handler.provider, handler);
   return future.then((Element element) {
     Uri foundScript = element.compilationUnit.script.resourceUri;
     Expect.stringEquals('$script', '$foundScript');
     Expect.stringEquals('instanceMethod2', element.name);
 
     String scope = poi.scopeInformation(element, position);
     Expect.stringEquals(
         JSON.encode(expectedSubclass), JSON.encode(JSON.decode(scope)), scope);
 
     return testAbstractField(handler);
   });
 }
 
 Future testAbstractField(FormattingDiagnosticHandler handler) {
+  poi.cachedCompiler = null;
   int position = 321;
 
   Uri script = Platform.script.resolve('data/abstract_field.dart');
 
   Future future = poi.runPoi(script, position, handler.provider, handler);
   return future.then((Element element) {
     Uri foundScript = element.compilationUnit.script.resourceUri;
     Expect.stringEquals('$script', '$foundScript');
     Expect.stringEquals('method', element.name);
 
@@ skipping 520 matching lines @@
       "name": "noSuchMethod",
       "kind": "function",
       "type": "(Invocation) -> dynamic"
     },
     {
       "name": "runtimeType",
       "kind": "getter"
     }
   ]
 };