Add dart2js option to select library categories.

dart/tests/compiler/dart2js/analyze_api_test.dart

Index: dart/tests/compiler/dart2js/analyze_api_test.dart
diff --git a/dart/tests/compiler/dart2js/analyze_api_test.dart b/dart/tests/compiler/dart2js/analyze_api_test.dart
index 1f4ede2141ec027ad3db1673b7af7980bea93d2e..0162524180820964e439fdc15943d9bb63b60115 100644
--- a/dart/tests/compiler/dart2js/analyze_api_test.dart
+++ b/dart/tests/compiler/dart2js/analyze_api_test.dart
@@ -43,12 +43,12 @@ void main() {
   });
   var provider = new SourceFileProvider();
   var handler = new CollectingDiagnosticHandler(provider);
-  handler.verbose = true;
   var compiler = new Compiler(
       provider.readStringFromUri,
       handler.diagnosticHandler,
       libraryRoot, libraryRoot,
-      <String>['--analyze-only', '--analyze-all']);
+      <String>['--analyze-only', '--analyze-all',
+               '--categories=Client,Server']);
   compiler.librariesToAnalyzeWhenRun = uriList;
   compiler.run(null);
   Expect.isFalse(handler.hasWarnings);