Removed fixed dependencies

packages/analyzer/lib/src/task/html_work_manager.dart

Index: packages/analyzer/lib/src/task/html_work_manager.dart
diff --git a/packages/analyzer/lib/src/task/html_work_manager.dart b/packages/analyzer/lib/src/task/html_work_manager.dart
index 218b48ae27e80195fbb9c7fcfea781354751aa59..911ef16e895154740096c6ac94a7597419186100 100644
--- a/packages/analyzer/lib/src/task/html_work_manager.dart
+++ b/packages/analyzer/lib/src/task/html_work_manager.dart
@@ -6,16 +6,10 @@ library analyzer.src.task.html_work_manager;
 
 import 'dart:collection';
 
+import 'package:analyzer/error/error.dart';
 import 'package:analyzer/src/context/cache.dart';
 import 'package:analyzer/src/generated/engine.dart'
-    show
-        AnalysisEngine,
-        AnalysisErrorInfo,
-        AnalysisErrorInfoImpl,
-        AnalysisOptions,
-        CacheState,
-        InternalAnalysisContext;
-import 'package:analyzer/src/generated/error.dart';
+    show AnalysisEngine, AnalysisErrorInfo, CacheState, InternalAnalysisContext;
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/utilities_collection.dart';
 import 'package:analyzer/src/task/html.dart';
@@ -231,7 +225,7 @@ class HtmlWorkManager implements WorkManager {
     scriptTargets.forEach(partition.remove);
     for (Source htmlSource in htmlSources) {
       CacheEntry entry = partition.get(htmlSource);
-      if (htmlSource != null) {
+      if (entry != null) {
         entry.setState(HTML_ERRORS, CacheState.INVALID);
         if (invalidateUris) {
           entry.setState(REFERENCED_LIBRARIES, CacheState.INVALID);