Inline source maps as part of each script.

pkg/dev_compiler/test/codegen_expected/BenchmarkBase.js

Index: pkg/dev_compiler/test/codegen_expected/BenchmarkBase.js
diff --git a/pkg/dev_compiler/test/codegen_expected/BenchmarkBase.js b/pkg/dev_compiler/test/codegen_expected/BenchmarkBase.js
index 0b2cfbafd1dd1a3a17ee5dc48870972ce1fd0806..803a049d772766da0e1b3b8416c9025bf42ca0b9 100644
--- a/pkg/dev_compiler/test/codegen_expected/BenchmarkBase.js
+++ b/pkg/dev_compiler/test/codegen_expected/BenchmarkBase.js
@@ -89,7 +89,7 @@ define(['dart_sdk'], function(dart_sdk) {
     statics: () => ({measureFor: dart.definiteFunctionType(core.double, [core.Function, core.int])}),
     names: ['measureFor']
   });
-  dart.trackLibraries("BenchmarkBase", {"BenchmarkBase.dart": BenchmarkBase$});
+  dart.trackLibraries("BenchmarkBase", {"BenchmarkBase.dart": BenchmarkBase$}, null);
   // Exports:
   return {
     BenchmarkBase: BenchmarkBase$