Macro. Provide 'macroSupport' to support 'package:build'.

dart-lang/build#3650

Change-Id: I9437205dd42335fdba8e59736ef4d6ba557b9aab
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/352997
Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
Commit-Queue: Konstantin Shcheglov <scheglov@google.com>

pkg/analyzer/lib/src/clients/build_resolvers/build_resolvers.dart

@@ -16,6 +16,7 @@ import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/summary/package_bundle_reader.dart';
 import 'package:analyzer/src/summary/summary_sdk.dart';
+import 'package:analyzer/src/summary2/macro.dart';
 import 'package:analyzer/src/summary2/package_bundle_format.dart';
 
 export 'package:analyzer/src/context/packages.dart' show Packages, Package;
@@ -65,6 +66,7 @@ AnalysisDriverForPackageBuild createAnalysisDriver({
     analysisOptionsMap: optionsMap,
     externalSummaries: dataStore,
     packages: packages,
+    macroSupport: KernelMacroSupport(),
   );
 
   scheduler.start();