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

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

Index: sdk/lib/_internal/pub_generated/lib/src/command/get.dart
diff --git a/sdk/lib/_internal/pub_generated/lib/src/command/get.dart b/sdk/lib/_internal/pub_generated/lib/src/command/get.dart
index 3e79fe473cd06b35fdba1a2dcdcaf9bb3678ee0a..70f75184ca0d4b52561608a1edb821d3bf735817 100644
--- a/sdk/lib/_internal/pub_generated/lib/src/command/get.dart
+++ b/sdk/lib/_internal/pub_generated/lib/src/command/get.dart
@@ -11,27 +11,28 @@ import '../solver/version_solver.dart';
 
 /// Handles the `get` pub command.
 class GetCommand extends PubCommand {
+  String get name => "get";
   String get description => "Get the current package's dependencies.";
-  String get usage => "pub get";
+  String get invocation => "pub get";
   String get docUrl => "http://dartlang.org/tools/pub/cmd/pub-get.html";
   List<String> get aliases => const ["install"];
-  bool get isOffline => commandOptions["offline"];
+  bool get isOffline => argResults["offline"];
 
   GetCommand() {
-    commandParser.addFlag(
+    argParser.addFlag(
         'offline',
         help: 'Use cached packages instead of accessing the network.');
 
-    commandParser.addFlag(
+    argParser.addFlag(
         'dry-run',
         abbr: 'n',
         negatable: false,
         help: "Report what dependencies would change but don't change any.");
   }
 
-  Future onRun() {
+  Future run() {
     return entrypoint.acquireDependencies(
         SolveType.GET,
-        dryRun: commandOptions['dry-run']);
+        dryRun: argResults['dry-run']);
   }
 }