Add analytics to analyzer-cli and analysis server.

pkg/analyzer_cli/lib/starter.dart

Index: pkg/analyzer_cli/lib/starter.dart
diff --git a/pkg/analyzer_cli/lib/starter.dart b/pkg/analyzer_cli/lib/starter.dart
index a784a754f4e01d9bd9bf2243b52268105e29455e..206fff60860acacc27148281c1bb83df4bde11cf 100644
--- a/pkg/analyzer_cli/lib/starter.dart
+++ b/pkg/analyzer_cli/lib/starter.dart
@@ -4,6 +4,8 @@
 
 library analyzer_cli.starter;
 
+import 'dart:async';
+
 import 'package:analyzer/plugin/resolver_provider.dart';
 import 'package:analyzer_cli/src/driver.dart';
 import 'package:plugin/plugin.dart';
@@ -36,5 +38,5 @@ abstract class CommandLineStarter {
   /**
    * Use the given command-line [arguments] to start this analyzer.
    */
-  void start(List<String> arguments);
+  Future<Null> start(List<String> arguments);
 }