CL for perf tryjob on android

tools/perf/page_sets/key_silk_cases/masonry.html

 <style>
 body {
   display: none;
   margin: 0;
 }
 .item {
   max-width: 200px;
   border: 2px solid red;
   margin: 1px;
 }
@@ skipping 1098 matching lines @@
             }
             return -1
         };
         "function" == typeof define && define.amd ? define(["outlayer/outlayer",
             "get-size/get-size"], b) : "object" == typeof exports ?
           module.exports = b(require("outlayer"), require("get-size")) :
           a.Masonry = b(a.Outlayer, a.getSize)
     }(window);
 var container = document.querySelector('#container');
 var item = container.children[0];
-for (var i = 0; i < 100; ++i) {
+for (var i = 0; i < 10; ++i) {
   container.appendChild(item.cloneNode(true));
 }
 document.body.style.display = 'block';
 window.done = false;
 window.brick = function() {
   var mason = new Masonry(container, {
     itemSelector: '.item',
   });
   requestAnimationFrame(function() {
     mason.element.style.maxWidth = '950px';
     mason.layout();
     requestAnimationFrame(function() {
       window.done = true;
     });
   });
 };
 </script>