Linter hookup into AS.

pkg/analyzer/test/src/task/dart_test.dart

Index: pkg/analyzer/test/src/task/dart_test.dart
diff --git a/pkg/analyzer/test/src/task/dart_test.dart b/pkg/analyzer/test/src/task/dart_test.dart
index 0f39004e1c77208f0eb03914aef6097e2dd86f1d..eb0efbcb5e6005bb8d7b1f1d0ba9c513319f7d72 100644
--- a/pkg/analyzer/test/src/task/dart_test.dart
+++ b/pkg/analyzer/test/src/task/dart_test.dart
@@ -2249,11 +2249,12 @@ class GenerateLintsTaskTest extends _AbstractDartTaskTest {
   void setUp() {
     super.setUp();
     enableLints();
+    lintRegistry[context] = [new GenerateLintsTaskTest_TestLinter()];
   }
 
   @override
   void tearDown() {
-    LintGenerator.LINTERS.clear();
+    lintRegistry[context] = [];
     super.tearDown();
   }
 
@@ -2264,9 +2265,6 @@ class GenerateLintsTaskTest extends _AbstractDartTaskTest {
 class a { }
 ''');
 
-    LintGenerator.LINTERS.clear();
-    LintGenerator.LINTERS.add(new GenerateLintsTaskTest_TestLinter());
-
     LibrarySpecificUnit target = new LibrarySpecificUnit(source, source);
     computeResult(target, LINTS, matcher: isGenerateLintsTask);
     // validate