Split net-internals log dump code apart from main.js, update

tests so they can test tab and tab handle visibility, and add
a pair of tests.

BUG=89057
TEST=NetInternalsTest.NetInternalsTourTabs, NetInternalsTest.NetInternalsExportImportDump. Other NetInternalsTest.* tests modified.

Review URL: http://codereview.chromium.org/7616020

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@97146 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 37 insertions, 0 deletions

diff --git a/chrome/browser/resources/net_internals/time_util.js b/chrome/browser/resources/net_internals/time_util.js
new file mode 100644
index 0000000..78cd379
--- /dev/null
+++ b/chrome/browser/resources/net_internals/time_util.js
@@ -0,0 +1,37 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+var timeutil = (function() {
+  /**
+   * Offset needed to convert event times to Date objects.
+   * Updated whenever constants are loaded.
+   */
+  var timeTickOffset = 0;
+
+  /**
+   * Sets the offset used to convert tick counts to dates.
+   */
+  function setTimeTickOffset(offset) {
+    // Note that the subtraction by 0 is to cast to a number (probably a float
+    // since the numbers are big).
+    timeTickOffset = offset - 0;
+  }
+
+  /**
+   * The browser gives us times in terms of "time ticks" in milliseconds.
+   * This function converts the tick count to a Date() object.
+   *
+   * @param {String} timeTicks.
+   * @returns {Date} The time that |timeTicks| represents.
+   */
+  function convertTimeTicksToDate(timeTicks) {
+    var timeStampMs = timeTickOffset + (timeTicks - 0);
+    return new Date(timeStampMs);
+  }
+
+  return {
+    setTimeTickOffset: setTimeTickOffset,
+    convertTimeTicksToDate: convertTimeTicksToDate
+  };
+})();