Made media::MediaLogEvent use base::TimeTicks instead of base::Time.

base::Time has the unfortumate ability to decrease (due to change of
timezone, user change, etc), a feature which makes it a poor choice
to use for logging.  base::TimeTicks does not have this disadvantage
so it replaces base::Time for logging purposes.

initial changes to time in media_internals

BUG=249212

Review URL: https://chromiumcodereview.appspot.com/17444015

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@208621 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 6 insertions, 8 deletions

diff --git a/content/browser/resources/media/event_list.js b/content/browser/resources/media/event_list.js
index fc13c05..df4d427 100644
--- a/content/browser/resources/media/event_list.js
+++ b/content/browser/resources/media/event_list.js
@@ -41,12 +41,12 @@ cr.define('media', function() {
      * @param {Object} event The MediaLogEvent that has occurred.
      */
     addEvent: function(event) {
-      var timeInMs = event.time * 1000;  // Work with milliseconds.
-      this.startTime_ = this.startTime_ || timeInMs;
-      timeInMs -= this.startTime_;
+      this.startTime_ = this.startTime_ || event.ticksMillis;
+      var normalizedTicksMillis = event.ticksMillis - this.startTime_;
 
       var row = document.createElement('tr');
-      row.appendChild(media.makeElement('td', timeInMs.toFixed(1)));
+      row.appendChild(media.makeElement(
+          'td', normalizedTicksMillis.toFixed(1)));
       row.appendChild(media.makeElement('td', event.type));
       var params = [];
       for (var key in event.params) {
diff --git a/content/browser/resources/media/metrics.js b/content/browser/resources/media/metrics.js
index 2c40f4a..c812d44f 100644
--- a/content/browser/resources/media/metrics.js
+++ b/content/browser/resources/media/metrics.js
@@ -78,14 +78,12 @@ cr.define('media', function() {
      * @param {string} type The type of event.
      */
     addEventInternal: function(event, type) {
-      var timeInMs = event.time * 1000;  // Work with milliseconds.
-
       for (var metric in metrics) {
         var m = this[metric];
         if (type == metrics[metric].start && !m.start) {
-          m.start = timeInMs;
+          m.start = event.ticksMillis;
         } else if (type == metrics[metric].end && m.start != null) {
-          var last = timeInMs - m.start;
+          var last = event.ticksMillis - m.start;
           m.last.textContent = last.toFixed(1);
           m.total += last;
           m.count++;