Add detailed performance histograms to Files.app. (Abandoned)

chrome/browser/resources/file_manager/js/metrics.js

 // Copyright (c) 2012 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.
 
 /**
  * @fileoverview Utility methods for accessing chrome.metricsPrivate API.
  *
  * To be included as a first script in main.html
  */
 
 var metrics = {};
 
 /**
  * A map from interval name to interval start timestamp.
  */
 metrics.intervals = {};
 
 /**
  * Start the named time interval.
  * Should be followed by a call to recordInterval with the same name.
  *
  * @param {string} name Unique interval name.
  */
 metrics.startInterval = function(name) {
   metrics.intervals[name] = Date.now();
 };
 
 metrics.startInterval('Load.Total');
 metrics.startInterval('Load.Script');
+metrics.startInterval('Load.Display');
 
 /**
  * Convert a short metric name to the full format.
  *
  * @param {string} name Short metric name.
  * @return {string} Full metric name.
  * @private
  */
 metrics.convertName_ = function(name) {
   return 'FileBrowser.' + name;
@@ skipping 82 matching lines @@
     'min': 1,
     'max': boundaryValue,
     'buckets': boundaryValue + 1
   };
   metrics.call_('recordValue', [metricDescr, index]);
   if (metrics.log) {
     console.log('chrome.metricsPrivate.recordValue',
         [metricDescr.metricName, index, value]);
   }
 };