Fix more strong mode errors in analyzer

pkg/analyzer/lib/src/task/html.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.task.html;
 
 import 'dart:collection';
 
 import 'package:analyzer/src/context/cache.dart';
 import 'package:analyzer/src/dart/scanner/scanner.dart';
@@ skipping 148 matching lines @@
         libraries.isEmpty ? Source.EMPTY_LIST : libraries;
     outputs[DART_SCRIPTS] =
         inlineScripts.isEmpty ? DartScript.EMPTY_LIST : inlineScripts;
   }
 
   /**
    * Return a map from the names of the inputs of this kind of task to the task
    * input descriptors describing those inputs for a task with the
    * given [target].
    */
-  static Map<String, TaskInput> buildInputs(Source target) {
+  static Map<String, TaskInput> buildInputs(AnalysisTarget target) {
     return <String, TaskInput>{DOCUMENT_INPUT: HTML_DOCUMENT.of(target)};
   }
 
   /**
    * Create a [DartScriptsTask] based on the given [target] in the given
    * [context].
    */
   static DartScriptsTask createTask(
       AnalysisContext context, AnalysisTarget target) {
     return new DartScriptsTask(context, target);
@@ skipping 50 matching lines @@
     // Record outputs.
     //
     outputs[HTML_ERRORS] = AnalysisError.mergeLists(errorLists);
   }
 
   /**
    * Return a map from the names of the inputs of this kind of task to the task
    * input descriptors describing those inputs for a task with the
    * given [target].
    */
-  static Map<String, TaskInput> buildInputs(Source target) {
+  static Map<String, TaskInput> buildInputs(AnalysisTarget target) {
     EnginePlugin enginePlugin = AnalysisEngine.instance.enginePlugin;
     Map<String, TaskInput> inputs = <String, TaskInput>{
       DART_ERRORS_INPUT: DART_SCRIPTS.of(target).toListOf(DART_ERRORS)
     };
     for (ResultDescriptor result in enginePlugin.htmlErrors) {
       String inputName = result.name + INPUT_SUFFIX;
       inputs[inputName] = result.of(target);
     }
     return inputs;
   }
@@ skipping 84 matching lines @@
       outputs[HTML_DOCUMENT_ERRORS] = errors;
       outputs[LINE_INFO] = _computeLineInfo(content);
     }
   }
 
   /**
    * Return a map from the names of the inputs of this kind of task to the task
    * input descriptors describing those inputs for a task with the given
    * [source].
    */
-  static Map<String, TaskInput> buildInputs(Source source) {
+  static Map<String, TaskInput> buildInputs(AnalysisTarget source) {
     return <String, TaskInput>{CONTENT_INPUT_NAME: CONTENT.of(source)};
   }
 
   /**
    * Create a [ParseHtmlTask] based on the given [target] in the given [context].
    */
   static ParseHtmlTask createTask(
       AnalysisContext context, AnalysisTarget target) {
     return new ParseHtmlTask(context, target);
   }
@@ skipping 46 matching lines @@
    * The content of the fragment.
    */
   final String content;
 
   /**
    * Initialize a newly created script fragment to have the given [offset] and
    * [content].
    */
   ScriptFragment(this.offset, this.line, this.column, this.content);
 }