Update to latest analyzer

lib/src/utils.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.
 
 /// Holds a couple utility functions used at various places in the system.
 library dev_compiler.src.utils;
 
 import 'dart:io';
 
 import 'package:path/path.dart' as path;
 import 'package:analyzer/src/generated/ast.dart'
     show
         ImportDirective,
         ExportDirective,
         PartDirective,
         CompilationUnit,
         Identifier,
         AnnotatedNode,
         AstNode,
         Expression,
         SimpleIdentifier,
         MethodInvocation;
 import 'package:analyzer/src/generated/constant.dart' show DartObject;
 import 'package:analyzer/src/generated/element.dart';
-import 'package:analyzer/src/generated/engine.dart'
-    show ParseDartTask, AnalysisContext;
+import 'package:analyzer/src/generated/engine.dart' show AnalysisContext;
 import 'package:analyzer/src/generated/error.dart' show ErrorCode;
+import 'package:analyzer/src/task/dart.dart' show ParseDartTask;
 import 'package:analyzer/src/generated/resolver.dart' show TypeProvider;
 import 'package:analyzer/src/generated/source.dart' show LineInfo, Source;
 import 'package:analyzer/analyzer.dart' show parseDirectives;
 import 'package:crypto/crypto.dart' show CryptoUtils, MD5;
 import 'package:source_span/source_span.dart';
 
 import 'codegen/js_names.dart' show invalidVariableName;
 
 bool isDartPrivateLibrary(LibraryElement library) {
   var uri = library.source.uri;
@@ skipping 363 matching lines @@
   int lineEnd = endLoc.offset;
   int lineNum = lineInfo.getLocation(lineEnd).lineNumber;
   while (lineEnd < content.length &&
       lineInfo.getLocation(++lineEnd).lineNumber == lineNum);
 
   var text = content.substring(start, end);
   var lineText = content.substring(lineStart, lineEnd);
   return new SourceSpanWithContext(startLoc, endLoc, text, lineText);
 }
 
+String _strongModeErrorPrefix = 'STRONG_MODE';
+
+bool isStrongModeError(ErrorCode errorCode) {
+  return errorCode.name.startsWith(_strongModeErrorPrefix);
+}
+
 String errorCodeName(ErrorCode errorCode) {
-  var name = errorCode.name;
-  final prefix = 'dev_compiler.';
-  if (name.startsWith(prefix)) {
-    return name.substring(prefix.length);
+  if (isStrongModeError(errorCode)) {
+    return errorCode.name.substring(_strongModeErrorPrefix.length + 1);
   } else {
     // TODO(jmesserly): this is for backwards compat, but not sure it's very
     // useful to log this.
     return 'AnalyzerMessage';
   }
 }
 
-bool isInlineJS(Element e) => e is FunctionElement &&
+bool isInlineJS(Element e) =>
+    e is FunctionElement &&
     e.library.source.uri.toString() == 'dart:_foreign_helper' &&
     e.name == 'JS';
 
-bool isDartMathMinMax(Element e) => e is FunctionElement &&
+bool isDartMathMinMax(Element e) =>
+    e is FunctionElement &&
     e.library.source.uri.toString() == 'dart:math' &&
     (e.name == 'min' || e.name == 'max');