More analyzer updates, and handle negative_tests

test/testing.dart

Index: test/testing.dart
diff --git a/test/testing.dart b/test/testing.dart
index 591a525e52ece7c4e3afe9685330c6c03b1e9709..d1335be04f121cb05c2b36b85f0685381534558c 100644
--- a/test/testing.dart
+++ b/test/testing.dart
@@ -7,33 +7,9 @@ library dev_compiler.src.testing;
 import 'dart:mirrors';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/file_system/memory_file_system.dart';
-import 'package:analyzer/src/generated/engine.dart'
-    show AnalysisContext, AnalysisEngine, AnalysisOptionsImpl;
 import 'package:analyzer/src/generated/source.dart';
-import 'package:cli_util/cli_util.dart' show getSdkDir;
 import 'package:path/path.dart' as path;
 
-import 'package:dev_compiler/src/analysis_context.dart';
-import 'package:dev_compiler/src/options.dart';
-
-/// Shared analysis context used for compilation.
-final AnalysisContext realSdkContext = () {
-  var context = createAnalysisContextWithSources(new SourceResolverOptions(
-      dartSdkPath: getSdkDir().path,
-      customUrlMappings: {
-        'package:expect/expect.dart': _testCodegenPath('expect.dart'),
-        'package:async_helper/async_helper.dart':
-            _testCodegenPath('async_helper.dart'),
-        'package:unittest/unittest.dart': _testCodegenPath('unittest.dart'),
-        'package:dom/dom.dart': _testCodegenPath('sunflower', 'dom.dart')
-      }));
-  (context.analysisOptions as AnalysisOptionsImpl).cacheSize = 512;
-  return context;
-}();
-
-String _testCodegenPath(String p1, [String p2]) =>
-    path.join(testDirectory, 'codegen', p1, p2);
-
 final String testDirectory =
     path.dirname((reflectClass(_TestUtils).owner as LibraryMirror).uri.path);