update the analyzer and analysis server perf tags

pkg/analysis_server/lib/src/context_manager.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // 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.
 
 import 'dart:async';
 import 'dart:collection';
 import 'dart:convert';
 import 'dart:core';
 
-import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analyzer/context/context_root.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/instrumentation/instrumentation.dart';
 import 'package:analyzer/plugin/resolver_provider.dart';
 import 'package:analyzer/source/analysis_options_provider.dart';
 import 'package:analyzer/source/package_map_provider.dart';
 import 'package:analyzer/source/package_map_resolver.dart';
 import 'package:analyzer/source/path_filter.dart';
 import 'package:analyzer/source/pub_package_map_provider.dart';
 import 'package:analyzer/source/sdk_ext.dart';
@@ skipping 1127 matching lines @@
           Packages packages = _readPackagespec(packagespecFile);
           return new PackagesFileDisposition(packages);
         }
         if (packageResolverProvider != null) {
           UriResolver resolver = packageResolverProvider(folder);
           if (resolver != null) {
             return new CustomPackageResolverDisposition(resolver);
           }
         }
 
-        ServerPerformanceStatistics.pub.makeCurrentWhile(() {
-          packageMapInfo = _packageMapProvider.computePackageMap(folder);
-        });
+        packageMapInfo = _packageMapProvider.computePackageMap(folder);
       } finally {
         callbacks.computingPackageMap(false);
       }
       for (String dependencyPath in packageMapInfo.dependencies) {
         addDependency(dependencyPath);
       }
       if (packageMapInfo.packageMap == null) {
         return new NoPackageFolderDisposition();
       }
       return new PackageMapDisposition(packageMapInfo.packageMap);
@@ skipping 803 matching lines @@
     }
     return _embedderLocator;
   }
 
   @override
   SdkExtensionFinder getSdkExtensionFinder(ResourceProvider resourceProvider) {
     return _sdkExtensionFinder ??=
         new SdkExtensionFinder(buildPackageMap(resourceProvider));
   }
 }