Spelling fixes e to i.

pkg/dev_compiler/test/codegen/BenchmarkBase.dart

 // Copyright 2011 Google Inc. All Rights Reserved.
 
 library BenchmarkBase;
 
 class Expect {
   static void equals(var expected, var actual) {
     if (expected != actual) {
       throw "Values not equal: $expected vs $actual";
     }
   }
@@ skipping 20 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 28 matching lines @@
     }, 2000);
     teardown();
     return result;
   }
 
   void report() {
     double score = measure();
     print("$name(RunTime): $score us.");
   }
 }