More strong mode fixes for analyzer

pkg/analyzer/test/generated/engine_test.dart

Index: pkg/analyzer/test/generated/engine_test.dart
diff --git a/pkg/analyzer/test/generated/engine_test.dart b/pkg/analyzer/test/generated/engine_test.dart
index 52e3030245acc702f55c9ac7a93d26d01be37e8d..8dfb25673918a5952e4b9c19aede4d5b6855840a 100644
--- a/pkg/analyzer/test/generated/engine_test.dart
+++ b/pkg/analyzer/test/generated/engine_test.dart
@@ -9,6 +9,7 @@ import 'dart:async';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/source/embedder.dart';
+import 'package:analyzer/src/cancelable_future.dart';
 import 'package:analyzer/src/context/cache.dart';
 import 'package:analyzer/src/context/context.dart';
 import 'package:analyzer/src/context/source.dart';
@@ -417,14 +418,15 @@ class TestAnalysisContext implements InternalAnalysisContext {
   }
 
   @override
-  Future<CompilationUnit> computeResolvedCompilationUnitAsync(
+  CancelableFuture<CompilationUnit> computeResolvedCompilationUnitAsync(
       Source source, Source librarySource) {
     fail("Unexpected invocation of getResolvedCompilationUnitFuture");
     return null;
   }
 
   @override
-  Object computeResult(AnalysisTarget target, ResultDescriptor result) {
+  Object/*=V*/ computeResult/*<V>*/(
+      AnalysisTarget target, ResultDescriptor/*<V>*/ result) {
     fail("Unexpected invocation of computeResult");
     return null;
   }
@@ -564,7 +566,8 @@ class TestAnalysisContext implements InternalAnalysisContext {
   }
 
   @override
-  Object getResult(AnalysisTarget target, ResultDescriptor result) {
+  Object/*=V*/ getResult/*<V>*/(
+      AnalysisTarget target, ResultDescriptor/*<V>*/ result) {
     fail("Unexpected invocation of getResult");
     return null;
   }
@@ -605,6 +608,7 @@ class TestAnalysisContext implements InternalAnalysisContext {
     return null;
   }
 
+  @deprecated
   @override
   Stream<ComputedResult> onResultComputed(ResultDescriptor descriptor) {
     fail("Unexpected invocation of onResultComputed");