Add common page_cycler and checkout acid3 cycler.

tools/page_cycler/common/head.js

+// Copyright (c) 2006-2009 The Chromium 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 with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// 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.
+
+var __c = ""; // that's good enough for me.
+var __td;
+var __tf;
+var __tl;
+var __iterations;
+var __cycle;
+var __results = false;
+var __page;
+var __TIMEOUT = 15;
+function __get_cookie(name) {
+  var cookies = document.cookie.split("; ");
+  for (var i = 0; i < cookies.length; ++i) {
+    var t = cookies[i].split("=");
+    if (t[0] == name && t[1])
+      return t[1];
+  }
+  return "";
+}
+function __pages() {  // fetch lazily
+  if (!("data" in this))
+    this.data = __get_cookie("__pc_pages").split(",");
+  return this.data;
+}
+function __get_timings() {
+  return __get_cookie("__pc_timings");
+}
+function __set_timings(timings) {
+  document.cookie = "__pc_timings=" + timings + "; path=/";
+}
+function __ontimeout() {
+  var doc;
+
+  // Call GC twice to cleanup JS heap before starting a new test.
+  if (window.gc) {
+    window.gc();
+    window.gc();
+  }
+
+  var ts = (new Date()).getTime();
+  var tlag = (ts - __te) - __TIMEOUT;
+  if (tlag > 0)
+    __tf = __tf + tlag;
+  if (__cycle == (__pages().length * __iterations)) {
+    document.cookie = "__pc_done=1; path=/";
+    doc = "../../common/report.html";
+  } else {
+    doc = "../" + __pages()[__page] + "/index.html"
+  }
+  
+  var timings = __tl;
+  var oldTimings = __get_timings();
+  if (oldTimings != "") { 
+    timings = oldTimings + "," + timings;
+  }
+  __set_timings(timings);
+  
+  var url = doc + "?n=" + __iterations + "&i=" + __cycle + "&p=" + __page + "&ts=" + ts + "&td=" + __td + "&tf=" + __tf;
+  document.location.href = url;
+}
+function __onload() {
+  if (__results)
+    return;
+  var unused = document.body.offsetHeight;  // force layout
+
+  var ts = 0, td = 0, te = (new Date()).getTime(), tf = 0;
+
+  var s = document.location.search;
+  if (s) {
+    var params = s.substring(1).split('&');
+    for (var i = 0; i < params.length; ++i) {
+      var f = params[i].split('=');
+      switch (f[0]) {
+      case 'skip':
+        // No calculation, just viewing
+        return;
+      case 'n':
+        __iterations = f[1];
+        break;
+      case 'i':
+        __cycle = (f[1] - 0) + 1;
+        break;
+      case 'p':
+        __page = ((f[1] - 0) + 1) % __pages().length;
+        break;
+      case 'ts':
+        ts = (f[1] - 0);
+        break;
+      case 'td':
+        td = (f[1] - 0);
+        break;
+      case 'tf':
+        tf = (f[1] - 0);
+        break;
+      }
+    }
+  }
+  __tl = (te - ts);
+  __td = td + __tl;
+  __te = te;
+  __tf = tf;  // record t-fudge
+
+  setTimeout("__ontimeout()", __TIMEOUT);
+}
+
+if (window.attachEvent)
+  window.attachEvent("onload", __onload);
+else
+  addEventListener("load", __onload, false);