Fix comment in test case.

test/mjsunit/timer.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 11 matching lines @@
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // Tests timer milliseconds granularity.
 
 (function run() {
   var start_test = Date.now();
-  // Let the retry run for maximum 20ms to reduce flakiness.
+  // Let the retry run for maximum 100ms to reduce flakiness.
   for (var start = Date.now(); start - start_test < 100; start = Date.now()) {
     var end = Date.now();
     while (end - start == 0) {
       end = Date.now();
     }
     if (end - start == 1) {
       // Found milliseconds granularity.
       return;
     } else {
       print("Timer difference too big: " + (end - start) + "ms");
     }
   }
   assertTrue(false);
 })()