Update pub to use the new command runner API in args.

sdk/lib/_internal/pub_generated/lib/src/command/run.dart

Index: sdk/lib/_internal/pub_generated/lib/src/command/run.dart
diff --git a/sdk/lib/_internal/pub_generated/lib/src/command/run.dart b/sdk/lib/_internal/pub_generated/lib/src/command/run.dart
index a9fee0f745d0e3ffd26c4bfb116b92b7277478d2..0d63daf12399cc68247414d6eb624e5e3c183bc7 100644
--- a/sdk/lib/_internal/pub_generated/lib/src/command/run.dart
+++ b/sdk/lib/_internal/pub_generated/lib/src/command/run.dart
@@ -16,28 +16,28 @@ import '../utils.dart';
 
 /// Handles the `run` pub command.
 class RunCommand extends PubCommand {
-  bool get takesArguments => true;
-  bool get allowTrailingOptions => false;
+  String get name => "run";
   String get description =>
       "Run an executable from a package.\n"
           "NOTE: We are currently optimizing this command's startup time.";
-  String get usage => "pub run <executable> [args...]";
+  String get invocation => "pub run <executable> [args...]";
+  bool get allowTrailingOptions => false;
 
   RunCommand() {
-    commandParser.addOption(
+    argParser.addOption(
         "mode",
         help: 'Mode to run transformers in.\n'
             '(defaults to "release" for dependencies, "debug" for ' 'entrypoint)');
   }
 
-  Future onRun() {
+  Future run() {
     final completer0 = new Completer();
     scheduleMicrotask(() {
       try {
         join0() {
           var package = entrypoint.root.name;
-          var executable = commandOptions.rest[0];
-          var args = commandOptions.rest.skip(1).toList();
+          var executable = argResults.rest[0];
+          var args = argResults.rest.skip(1).toList();
           join1() {
             var mode;
             join2() {
@@ -58,8 +58,8 @@ class RunCommand extends PubCommand {
                 }
               }, onError: completer0.completeError);
             }
-            if (commandOptions['mode'] != null) {
-              mode = new BarbackMode(commandOptions['mode']);
+            if (argResults['mode'] != null) {
+              mode = new BarbackMode(argResults['mode']);
               join2();
             } else {
               join3() {
@@ -82,7 +82,7 @@ class RunCommand extends PubCommand {
               join1();
             }
             if (p.split(executable).length > 1) {
-              usageError(
+              usageException(
                   "Cannot run an executable in a subdirectory of a " + "dependency.");
               join4();
             } else {
@@ -92,8 +92,8 @@ class RunCommand extends PubCommand {
             join1();
           }
         }
-        if (commandOptions.rest.isEmpty) {
-          usageError("Must specify an executable to run.");
+        if (argResults.rest.isEmpty) {
+          usageException("Must specify an executable to run.");
           join0();
         } else {
           join0();