Get rid of deferred binding for usage errors.

sdk/lib/_internal/pub/lib/src/executable.dart

Index: sdk/lib/_internal/pub/lib/src/executable.dart
diff --git a/sdk/lib/_internal/pub/lib/src/executable.dart b/sdk/lib/_internal/pub/lib/src/executable.dart
index ab63765ba60727a2a663cdb78d3535601336e588..e7d1c10139b19ac18aa04a113cc0e4c332c72f4f 100644
--- a/sdk/lib/_internal/pub/lib/src/executable.dart
+++ b/sdk/lib/_internal/pub/lib/src/executable.dart
@@ -13,6 +13,7 @@ import 'package:stack_trace/stack_trace.dart';
 
 import 'barback/asset_environment.dart';
 import 'barback/barback_server.dart';
+import 'command.dart';
 import 'entrypoint.dart';
 import 'exit_codes.dart' as exit_codes;
 import 'log.dart' as log;
@@ -28,8 +29,8 @@ import 'utils.dart';
 /// Arguments from [args] will be passed to the spawned Dart application.
 ///
 /// Returns the exit code of the spawned app.
-Future<int> runExecutable(Entrypoint entrypoint, String package,
-    String executable, Iterable<String> args) {
+Future<int> runExecutable(PubCommand command, Entrypoint entrypoint,
+    String package, String executable, Iterable<String> args) {
   // If the command has a path separator, then it's a path relative to the
   // root of the package. Otherwise, it's implicitly understood to be in
   // "bin".
@@ -37,7 +38,8 @@ Future<int> runExecutable(Entrypoint entrypoint, String package,
   var parts = p.split(executable);
   if (parts.length > 1) {
     if (package != entrypoint.root.name) {
-      usageError("Cannot run an executable in a subdirectory of a dependency.");
+      command.usageError(
+          "Cannot run an executable in a subdirectory of a dependency.");
     }
 
     rootDir = parts.first;