Update MockSdk to be more consistent with the actual SDK, switch x_Driver tests to it.

pkg/analyzer/test/src/dart/analysis/driver_test.dart

 // Copyright (c) 2016, 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.driver;
 
 import 'dart:async';
 import 'dart:convert';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/standard_resolution_map.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/error/error.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/src/dart/analysis/byte_store.dart';
 import 'package:analyzer/src/dart/analysis/driver.dart';
 import 'package:analyzer/src/dart/analysis/file_state.dart';
 import 'package:analyzer/src/dart/analysis/status.dart';
 import 'package:analyzer/src/dart/analysis/top_level_declaration.dart';
 import 'package:analyzer/src/error/codes.dart';
 import 'package:analyzer/src/generated/engine.dart' show AnalysisOptionsImpl;
+import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/summary/idl.dart';
 import 'package:convert/convert.dart';
 import 'package:crypto/crypto.dart';
 import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
+import '../../context/mock_sdk.dart';
 import 'base.dart';
-import 'physical_sdk.dart';
 
 main() {
   defineReflectiveSuite(() {
     defineReflectiveTests(AnalysisDriverTest);
     defineReflectiveTests(AnalysisDriverSchedulerTest);
   });
 }
 
 /**
  * Returns a [Future] that completes after pumping the event queue [times]
  * times. By default, this should pump the event queue enough times to allow
  * any code to run, as long as it's not waiting on some external event.
  */
 Future pumpEventQueue([int times = 5000]) {
   if (times == 0) return new Future.value();
   // We use a delayed future to allow microtask events to finish. The
   // Future.value or Future() constructors use scheduleMicrotask themselves and
   // would therefore not wait for microtask callbacks that are scheduled after
   // invoking this method.
   return new Future.delayed(Duration.ZERO, () => pumpEventQueue(times - 1));
 }
 
 @reflectiveTest
 class AnalysisDriverSchedulerTest {
   final MemoryResourceProvider provider = new MemoryResourceProvider();
+  DartSdk sdk;
   final ByteStore byteStore = new MemoryByteStore();
   final FileContentOverlay contentOverlay = new FileContentOverlay();
 
   final StringBuffer logBuffer = new StringBuffer();
   PerformanceLog logger;
 
   AnalysisDriverScheduler scheduler;
 
   List<AnalysisResult> allResults = [];
 
   AnalysisDriver newDriver() {
     AnalysisDriver driver = new AnalysisDriver(
         scheduler,
         logger,
         provider,
         byteStore,
         contentOverlay,
         'test',
         new SourceFactory(
             [new DartUriResolver(sdk), new ResourceUriResolver(provider)],
             null,
             provider),
         new AnalysisOptionsImpl()..strongMode = true);
     driver.results.forEach(allResults.add);
     return driver;
   }
 
   void setUp() {
+    sdk = new MockSdk(resourceProvider: provider);
     logger = new PerformanceLog(logBuffer);
     scheduler = new AnalysisDriverScheduler(logger);
     scheduler.start();
   }
 
   test_priorities_getResult_beforePriority() async {
     AnalysisDriver driver1 = newDriver();
     AnalysisDriver driver2 = newDriver();
 
     String a = _p('/a.dart');
@@ skipping 1725 matching lines @@
 
   /**
    * Return the [provider] specific path for the given Posix [path].
    */
   String _p(String path) => provider.convertPath(path);
 
   static String _md5(String content) {
     return hex.encode(md5.convert(UTF8.encode(content)).bytes);
   }
 }