Make Analysis Server tests use MockSdk again.

pkg/analyzer/test/src/context/mock_sdk.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.
 
 library analyzer.test.src.context.mock_sdk;
 
 import 'package:analyzer/file_system/file_system.dart' as resource;
 import 'package:analyzer/file_system/memory_file_system.dart' as resource;
 import 'package:analyzer/src/context/cache.dart';
 import 'package:analyzer/src/context/context.dart';
@@ skipping 101 matching lines @@
 
 const _MockSdkLibrary _LIB_CORE = const _MockSdkLibrary(
     'dart:core',
     '$sdkRoot/lib/core/core.dart',
     '''
 library dart.core;
 
 import 'dart:async';
 
 class Object {
+  const Object() {}
   bool operator ==(other) => identical(this, other);
   String toString() => 'a string';
   int get hashCode => 0;
   Type get runtimeType => null;
   dynamic noSuchMethod(Invocation invocation) => null;
 }
 
 class Function {}
 class StackTrace {}
 
@@ skipping 222 matching lines @@
 const _MockSdkLibrary _LIB_MATH = const _MockSdkLibrary(
     'dart:math',
     '$sdkRoot/lib/math/math.dart',
     '''
 library dart.math;
 
 const double E = 2.718281828459045;
 const double PI = 3.1415926535897932;
 const double LN10 =  2.302585092994046;
 
-num/*=T*/ min/*<T extends num>*/(num/*=T*/ a, num/*=T*/ b) => null;
-num/*=T*/ max/*<T extends num>*/(num/*=T*/ a, num/*=T*/ b) => null;
+T min<T extends num>(T a, T b) => null;
+T max<T extends num>(T a, T b) => null;
 
 external double cos(num x);
 external double sin(num x);
 external double sqrt(num x);
 class Random {
   bool nextBool() => true;
   double nextDouble() => 2.0;
   int nextInt() => 1;
 }
 ''');
@@ skipping 230 matching lines @@
 
   @override
   AnalysisCache createCacheFromSourceFactory(SourceFactory factory) {
     if (factory == null) {
       return super.createCacheFromSourceFactory(factory);
     }
     return new AnalysisCache(
         <CachePartition>[AnalysisEngine.instance.partitionManager.forSdk(sdk)]);
   }
 }