[benchmark] Add warm-up iteration config

Add warm-up iteration config The first n iterations are excluded from the average where n is the number of warm-up iterations. R=tyoshino@chromium.org Committed: https://code.google.com/p/pywebsocket/source/detail?r=853

[tyoshino (chromium.org), 2014-09-26 13:36:10]

lgtm https://codereview.appspot.com/147190043/diff/20001/src/example/benchmark.html File src/example/benchmark.html (right): https://codereview.appspot.com/147190043/diff/20001/src/example/benchmark.htm... src/example/benchmark.html:164: <td>Number of Iterations</td> please also fix this to "iterations" https://codereview.appspot.com/147190043/diff/20001/src/example/benchmark.htm... src/example/benchmark.html:168: <td>Number of Warm-up Iterations</td> use small letter for warm-up and iterations. https://codereview.appspot.com/147190043/diff/20001/src/example/benchmark.js File src/example/benchmark.js (right): https://codereview.appspot.com/147190043/diff/20001/src/example/benchmark.js#... src/example/benchmark.js:244: function addResultClearTask(config) { "Clear" -> "Clearing" for consistency https://codereview.appspot.com/147190043/diff/20001/src/example/xhr_benchmark... File src/example/xhr_benchmark.html (right): https://codereview.appspot.com/147190043/diff/20001/src/example/xhr_benchmark... src/example/xhr_benchmark.html:166: <td>Number of Iterations</td> here too https://codereview.appspot.com/147190043/diff/20001/src/example/xhr_benchmark... src/example/xhr_benchmark.html:170: <td>Number of Warm-up Iterations</td> here too https://codereview.appspot.com/147190043/diff/20001/src/example/xhr_benchmark.js File src/example/xhr_benchmark.js (right): https://codereview.appspot.com/147190043/diff/20001/src/example/xhr_benchmark... src/example/xhr_benchmark.js:303: function addResultClearTask(config) { here too

[hiroshige, 2014-10-02 07:48:25]

Done, thanks!

[hiroshige, 2014-10-02 07:48:39]

Committed patchset #2 (id:60001) manually as r853 (presubmit successful).