fix #26782, add no-implicit-casts, no-implicit-dynamic options

pkg/analyzer_cli/lib/src/driver.dart

 // Copyright (c) 2015, 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_cli.src.driver;
 
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
@@ skipping 630 matching lines @@
       CommandLineOptions options) {
     AnalysisOptionsImpl contextOptions = new AnalysisOptionsImpl();
     contextOptions.trackCacheDependencies = false;
     contextOptions.hint = !options.disableHints;
     contextOptions.enableStrictCallChecks = options.enableStrictCallChecks;
     contextOptions.enableSuperMixins = options.enableSuperMixins;
     contextOptions.generateImplicitErrors = options.showPackageWarnings;
     contextOptions.generateSdkErrors = options.showSdkWarnings;
     contextOptions.lint = options.lints;
     contextOptions.strongMode = options.strongMode;
+    contextOptions.implicitCasts = options.implicitCasts;
+    contextOptions.implicitDynamic = options.implicitDynamic;
     return contextOptions;
   }
 
   static void setAnalysisContextOptions(
       AnalysisContext context,
       CommandLineOptions options,
       void configureContextOptions(AnalysisOptionsImpl contextOptions)) {
     Map<String, String> definedVariables = options.definedVariables;
     if (definedVariables.isNotEmpty) {
       DeclaredVariables declaredVariables = context.declaredVariables;
@@ skipping 171 matching lines @@
     for (var package in packages) {
       var packageName = path.basename(package.path);
       var realPath = package.resolveSymbolicLinksSync();
       result[packageName] = [
         PhysicalResourceProvider.INSTANCE.getFolder(realPath)
       ];
     }
     return result;
   }
 }