Move ResolverProvider to analyzer so that it can be shared

pkg/analyzer/lib/plugin/resolver_provider.dart

Index: pkg/analyzer/lib/plugin/resolver_provider.dart
diff --git a/pkg/analysis_server/lib/plugin/analysis/resolver_provider.dart b/pkg/analyzer/lib/plugin/resolver_provider.dart
similarity index 72%
rename from pkg/analysis_server/lib/plugin/analysis/resolver_provider.dart
rename to pkg/analyzer/lib/plugin/resolver_provider.dart
index ab6926cb29a873c9896bfb62eab267055d011bff..117237236a678cf17a46d51fb957a5ffd9381e1d 100644
--- a/pkg/analysis_server/lib/plugin/analysis/resolver_provider.dart
+++ b/pkg/analyzer/lib/plugin/resolver_provider.dart
@@ -2,7 +2,7 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-library analysis_server.plugin.analysis.resolver_provider;
+library analyzer.plugin.resolver_provider;
 
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/src/generated/source.dart';
@@ -10,7 +10,5 @@ import 'package:analyzer/src/generated/source.dart';
 /**
  * A function that will return a [UriResolver] that can be used to resolve a
  * specific kind of URI within the analysis context rooted at the given folder.
- * This is currently being used to provide a package URI resolver that will be
- * used by the server (see [ServerStarter.packageResolverProvider]).
  */
 typedef UriResolver ResolverProvider(Folder folder);