First batch of changes to make analyzer package strong mode error free

pkg/analyzer/lib/src/context/context.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.src.context.context;
 
 import 'dart:async';
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
@@ skipping 1001 matching lines @@
       Source unitSource, Source librarySource) {
     if (!AnalysisEngine.isDartFileName(unitSource.shortName) ||
         !AnalysisEngine.isDartFileName(librarySource.shortName)) {
       return null;
     }
     return getResult(
         new LibrarySpecificUnit(librarySource, unitSource), RESOLVED_UNIT);
   }
 
   @override
-  Object getResult(AnalysisTarget target, ResultDescriptor result) {
-    return _cache.getValue(target, result);
+  Object/*=V*/ getResult/*<V>*/(
+      AnalysisTarget target, ResultDescriptor/*<V>*/ result) {
+    return _cache.getValue(target, result) as Object/*=V*/;
   }
 
   @override
   List<Source> getSourcesWithFullName(String path) {
     return analysisCache.getSourcesWithFullName(path);
   }
 
   @override
   bool handleContentsChanged(
       Source source, String originalContents, String newContents, bool notify) {
@@ skipping 968 matching lines @@
    * If the result cannot be generated, then the future will be completed with
    * the error AnalysisNotScheduledError.
    */
   CancelableFuture<T> computeAsync() {
     if (_context.isDisposed) {
       // No further analysis is expected, so return a future that completes
       // immediately with AnalysisNotScheduledError.
       return new CancelableFuture.error(new AnalysisNotScheduledError());
     }
     CacheEntry entry = _context.getCacheEntry(_target);
-    PendingFuture pendingFuture =
+    PendingFuture<T> pendingFuture =
         new PendingFuture<T>(_context, _target, (CacheEntry entry) {
       CacheState state = entry.getState(_descriptor);
       if (state == CacheState.ERROR) {
         throw entry.exception;
       } else if (state == CacheState.INVALID) {
         return null;
       }
       return entry.getValue(_descriptor);
     });
     if (!pendingFuture.evaluate(entry)) {
@@ skipping 155 matching lines @@
     }
     DartSdk sdk = factory.dartSdk;
     if (sdk == null) {
       throw new IllegalArgumentException(
           "The source factory for an SDK analysis context must have a DartUriResolver");
     }
     return new AnalysisCache(
         <CachePartition>[AnalysisEngine.instance.partitionManager.forSdk(sdk)]);
   }
 }