Pass AnalysisOptions into SdkCreator, disable changing afterwards.

pkg/analysis_server/lib/src/operation/operation_analysis.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 operation.analysis;
 
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/computer/computer_highlights.dart';
 import 'package:analysis_server/src/computer/computer_highlights2.dart';
 import 'package:analysis_server/src/computer/computer_outline.dart';
@@ skipping 232 matching lines @@
     var overrides = new DartUnitOverridesComputer(dartUnit).compute();
     var params = new protocol.AnalysisOverridesParams(file, overrides);
     server.sendNotification(params.toNotification());
   });
 }
 
 /**
  * Sets the cache size in the given [context] to the given value.
  */
 void setCacheSize(AnalysisContext context, int cacheSize) {
-  AnalysisOptionsImpl options =
-      new AnalysisOptionsImpl.from(context.analysisOptions);
-  options.cacheSize = cacheSize;
-  context.analysisOptions = options;
+  // TODO(scheglov) The cache size cannot be changed with task model.
+  // TODO(scheglov) Consider removing this function.
+//  AnalysisOptionsImpl options =
+//      new AnalysisOptionsImpl.from(context.analysisOptions);
+//  options.cacheSize = cacheSize;
+//  context.analysisOptions = options;
 }
 
 String _computeLibraryName(CompilationUnit unit) {
   for (Directive directive in unit.directives) {
     if (directive is LibraryDirective && directive.name != null) {
       return directive.name.name;
     }
   }
   for (Directive directive in unit.directives) {
     if (directive is PartOfDirective && directive.libraryName != null) {
@@ skipping 272 matching lines @@
 abstract class _SingleFileOperation extends SourceSensitiveOperation {
   final String file;
 
   _SingleFileOperation(AnalysisContext context, this.file) : super(context);
 
   @override
   bool shouldBeDiscardedOnSourceChange(Source source) {
     return source.fullName == file;
   }
 }