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

sdk/lib/_internal/pub/lib/src/command/global_run.dart

Index: sdk/lib/_internal/pub/lib/src/command/global_run.dart
diff --git a/sdk/lib/_internal/pub/lib/src/command/global_run.dart b/sdk/lib/_internal/pub/lib/src/command/global_run.dart
index 06783e5103db7cb129acaa5122b734d8988fe8a7..7fc07a7aa5792794506057705746ac7e8bb946c2 100644
--- a/sdk/lib/_internal/pub/lib/src/command/global_run.dart
+++ b/sdk/lib/_internal/pub/lib/src/command/global_run.dart
@@ -15,28 +15,28 @@ import '../utils.dart';
 
 /// Handles the `global run` pub command.
 class GlobalRunCommand extends PubCommand {
-  bool get takesArguments => true;
-  bool get allowTrailingOptions => false;
+  String get name => "run";
   String get description =>
       "Run an executable from a globally activated package.\n"
       "NOTE: We are currently optimizing this command's startup time.";
-  String get usage => "pub global run <package>:<executable> [args...]";
+  String get invocation => "pub global run <package>:<executable> [args...]";
+  bool get allowTrailingOptions => false;
 
   /// The mode for barback transformers.
-  BarbackMode get mode => new BarbackMode(commandOptions["mode"]);
+  BarbackMode get mode => new BarbackMode(argResults["mode"]);
 
   GlobalRunCommand() {
-    commandParser.addOption("mode", defaultsTo: "release",
+    argParser.addOption("mode", defaultsTo: "release",
         help: 'Mode to run transformers in.');
   }
 
-  Future onRun() async {
-    if (commandOptions.rest.isEmpty) {
-      usageError("Must specify an executable to run.");
+  Future run() async {
+    if (argResults.rest.isEmpty) {
+      usageException("Must specify an executable to run.");
     }
 
     var package;
-    var executable = commandOptions.rest[0];
+    var executable = argResults.rest[0];
     if (executable.contains(":")) {
       var parts = split1(executable, ":");
       package = parts[0];
@@ -46,11 +46,11 @@ class GlobalRunCommand extends PubCommand {
       package = executable;
     }
 
-    var args = commandOptions.rest.skip(1).toList();
+    var args = argResults.rest.skip(1).toList();
     if (p.split(executable).length > 1) {
       // TODO(nweiz): Use adjacent strings when the new async/await compiler
       // lands.
-      usageError('Cannot run an executable in a subdirectory of a global ' +
+      usageException('Cannot run an executable in a subdirectory of a global ' +
           'package.');
     }