Spelling fixes e to i.

runtime/vm/snapshot_test.dart

 // Copyright (c) 2012, 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.
 
 import 'dart:isolate';
 import 'dart:async';
 
 class Expect {
   static void equals(x, y) {
     if (x != y) throw new ArgumentError('not equal');
@@ skipping 703 matching lines @@
 
   // The benchmark code.
   // This function is not used, if both [warmup] and [exercise] are overwritten.
   void run() {}
 
   // Runs a short version of the benchmark. By default invokes [run] once.
   void warmup() {
     run();
   }
 
-  // Exercices the benchmark. By default invokes [run] 10 times.
+  // Exercises the benchmark. By default invokes [run] 10 times.
   void exercise() {
     for (int i = 0; i < 10; i++) {
       run();
     }
   }
 
   // Not measured setup code executed prior to the benchmark runs.
   void setup() {}
 
   // Not measures teardown code executed after the benchmark runs.
@@ skipping 807 matching lines @@
 void processLines() {
   port.receive((message, SendPort replyTo) {
     if (message == TERMINATION_MESSAGE) {
       assert(replyTo == null);
       port.close();
     } else {
       replyTo.send(processLine(message), null);
     }
   });
 }