Correctly use sdk passed on command-line

pkg/analysis_server/test/mock_sdk.dart

Index: pkg/analysis_server/test/mock_sdk.dart
diff --git a/pkg/analysis_server/test/mock_sdk.dart b/pkg/analysis_server/test/mock_sdk.dart
index 18d5316efdf6cd257e2cf1e84b93e464a2500b9e..5681817f2775a8d1c8a3d6c1f7de9ca367e851ba 100644
--- a/pkg/analysis_server/test/mock_sdk.dart
+++ b/pkg/analysis_server/test/mock_sdk.dart
@@ -13,7 +13,7 @@ import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/summary/idl.dart' show PackageBundle;
 
 class MockSdk implements DartSdk {
-  static const _MockSdkLibrary LIB_CORE = const _MockSdkLibrary(
+  static const MockSdkLibrary LIB_CORE = const MockSdkLibrary(
       'dart:core',
       '/lib/core/core.dart',
       '''
@@ -155,7 +155,7 @@ class Uri {
 }
 ''');
 
-  static const _MockSdkLibrary LIB_ASYNC = const _MockSdkLibrary(
+  static const MockSdkLibrary LIB_ASYNC = const MockSdkLibrary(
       'dart:async',
       '/lib/async/async.dart',
       '''
@@ -174,7 +174,7 @@ class Stream<T> {}
 abstract class StreamTransformer<S, T> {}
 ''');
 
-  static const _MockSdkLibrary LIB_COLLECTION = const _MockSdkLibrary(
+  static const MockSdkLibrary LIB_COLLECTION = const MockSdkLibrary(
       'dart:collection',
       '/lib/collection/collection.dart',
       '''
@@ -183,7 +183,7 @@ library dart.collection;
 abstract class HashMap<K, V> implements Map<K, V> {}
 ''');
 
-  static const _MockSdkLibrary LIB_CONVERT = const _MockSdkLibrary(
+  static const MockSdkLibrary LIB_CONVERT = const MockSdkLibrary(
       'dart:convert',
       '/lib/convert/convert.dart',
       '''
@@ -195,7 +195,7 @@ abstract class Converter<S, T> implements StreamTransformer {}
 class JsonDecoder extends Converter<String, Object> {}
 ''');
 
-  static const _MockSdkLibrary LIB_MATH = const _MockSdkLibrary(
+  static const MockSdkLibrary LIB_MATH = const MockSdkLibrary(
       'dart:math',
       '/lib/math/math.dart',
       '''
@@ -216,7 +216,7 @@ class Random {
 }
 ''');
 
-  static const _MockSdkLibrary LIB_HTML = const _MockSdkLibrary(
+  static const MockSdkLibrary LIB_HTML = const MockSdkLibrary(
       'dart:html',
       '/lib/html/dartium/html_dartium.dart',
       '''
@@ -224,7 +224,7 @@ library dart.html;
 class HtmlElement {}
 ''');
 
-  static const _MockSdkLibrary LIB_INTERNAL = const _MockSdkLibrary(
+  static const MockSdkLibrary LIB_INTERNAL = const MockSdkLibrary(
       'dart:_internal',
       '/lib/internal/internal.dart',
       '''
@@ -252,7 +252,7 @@ external void printToConsole(String line);
 
   MockSdk() {
     LIBRARIES.forEach((SdkLibrary library) {
-      provider.newFile(library.path, (library as _MockSdkLibrary).content);
+      provider.newFile(library.path, (library as MockSdkLibrary).content);
     });
   }
 
@@ -352,12 +352,12 @@ external void printToConsole(String line);
   }
 }
 
-class _MockSdkLibrary implements SdkLibrary {
+class MockSdkLibrary implements SdkLibrary {
   final String shortName;
   final String path;
   final String content;
 
-  const _MockSdkLibrary(this.shortName, this.path, this.content);
+  const MockSdkLibrary(this.shortName, this.path, this.content);
 
   @override
   String get category => throw unimplemented;