Spelling fixes e to i.

pkg/analyzer/lib/src/task/driver.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.driver;
 
 import 'dart:async';
 import 'dart:collection';
 
 import 'package:analyzer/exception/exception.dart';
@@ skipping 211 matching lines @@
       return new StreamController<ResultChangedEvent>.broadcast(sync: true);
     }).stream;
   }
 
   /**
    * Perform the next analysis task, and return `true` if there is more work to
    * be done in order to compute all of the required analysis information.
    */
   bool performAnalysisTask() {
     //
-    // TODO(brianwilkerson) This implementaiton does not allow us to prioritize
+    // TODO(brianwilkerson) This implementation does not allow us to prioritize
     // work across contexts. What we need is a way for an external client to ask
     // to have all priority files analyzed for each context, then ask for normal
     // files to be analyzed. There are a couple of ways to do this.
     //
     // First, we could add a "bool priorityOnly" parameter to this method and
     // return null here when it is true.
     //
     // Second, we could add a concept of a priority order and (externally) run
     // through the priorities from highest to lowest. That would be a nice
     // generalization of the previous idea, but it isn't clear that we need the
@@ skipping 632 matching lines @@
   final TaskManager taskManager;
 
   _WorkOrderDependencyWalker(this.taskManager, WorkItem startingNode)
       : super(startingNode);
 
   @override
   WorkItem getNextInput(WorkItem node, List<WorkItem> skipInputs) {
     return node.gatherInputs(taskManager, skipInputs);
   }
 }