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

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

Index: chrome/browser/resources/file_manager/js/file_manager.js
diff --git a/chrome/browser/resources/file_manager/js/file_manager.js b/chrome/browser/resources/file_manager/js/file_manager.js
index a9d59b8298b5bd387927496e4a00956b4a34abec..221f4291f70ad3283c94cc78c8b915fe23d1a6a0 100644
--- a/chrome/browser/resources/file_manager/js/file_manager.js
+++ b/chrome/browser/resources/file_manager/js/file_manager.js
@@ -210,6 +210,7 @@ var BOTTOM_MARGIN_FOR_PREVIEW_PANEL_PX = 52;
   };
 
   FileManager.prototype.initPreferences_ = function(callback) {
+    metrics.startInterval('Load.Preferences');
     var group = new AsyncUtil.Group();
 
     // DRIVE preferences should be initialized before creating DirectoryModel
@@ -250,7 +251,10 @@ var BOTTOM_MARGIN_FOR_PREVIEW_PANEL_PX = 52;
     // TODO(yoshiki): Remove this in M31 http://crbug.com/268784/
     chrome.storage.local.remove('folder-shortcuts-list');
 
-    group.run(callback);
+    group.run(function() {
+      metrics.recordInterval('Load.Preferences');
+      callback();
+    });
   };
 
   /**
@@ -286,6 +290,7 @@ var BOTTOM_MARGIN_FOR_PREVIEW_PANEL_PX = 52;
    * @private
    */
   FileManager.prototype.initFileSystemUI_ = function(callback) {
+    metrics.startInterval('Load.FileSystemUI');
     this.table_.startBatchUpdates();
     this.grid_.startBatchUpdates();
 
@@ -410,6 +415,7 @@ var BOTTOM_MARGIN_FOR_PREVIEW_PANEL_PX = 52;
     this.table_.endBatchUpdates();
     this.grid_.endBatchUpdates();
 
+    metrics.recordInterval('Load.FileSystemUI');
     callback();
   };
 
@@ -721,6 +727,7 @@ var BOTTOM_MARGIN_FOR_PREVIEW_PANEL_PX = 52;
    * @private
    */
   FileManager.prototype.initGeneral_ = function(callback) {
+    metrics.startInterval('Load.General');
     if (window.appState) {
       this.params_ = window.appState.params || {};
       this.defaultPath = window.appState.defaultPath;
@@ -730,6 +737,7 @@ var BOTTOM_MARGIN_FOR_PREVIEW_PANEL_PX = 52;
                      {};
       this.defaultPath = this.params_.defaultPath;
     }
+    metrics.recordInterval('Load.General');
     callback();
   };
 
@@ -740,16 +748,19 @@ var BOTTOM_MARGIN_FOR_PREVIEW_PANEL_PX = 52;
    * @private
    */
   FileManager.prototype.initStrings_ = function(callback) {
+    metrics.startInterval('Load.Strings');
     // Fetch the strings via the private api if running in the browser window.
     // Otherwise, read cached strings from the local storage.
     if (util.platform.runningInBrowser()) {
       chrome.fileBrowserPrivate.getStrings(function(strings) {
         loadTimeData.data = strings;
+        metrics.recordInterval('Load.Strings');
         callback();
       });
     } else {
       chrome.storage.local.get('strings', function(items) {
         loadTimeData.data = items['strings'];
+        metrics.recordInterval('Load.Strings');
         callback();
       });
     }
@@ -777,6 +788,7 @@ var BOTTOM_MARGIN_FOR_PREVIEW_PANEL_PX = 52;
    * @private
    */
   FileManager.prototype.initEssentialUI_ = function(callback) {
+    metrics.startInterval('Load.EssentialUI');
     this.listType_ = null;
 
     this.filesystemObserverId_ = null;
@@ -826,13 +838,16 @@ var BOTTOM_MARGIN_FOR_PREVIEW_PANEL_PX = 52;
 
     this.initDialogType_();
 
+    metrics.recordInterval('Load.Display');
+    metrics.recordInterval('Load.EssentialUI');
+
     // Show the window as soon as the UI pre-initialization is done.
     if (this.dialogType == DialogType.FULL_PAGE &&
         !util.platform.runningInBrowser()) {
       chrome.app.window.current().show();
       setTimeout(callback, 100);  // Wait until the animation is finished.
     } else {
-      callback();
+     callback();
     }
   };
 
@@ -862,6 +877,7 @@ var BOTTOM_MARGIN_FOR_PREVIEW_PANEL_PX = 52;
    * @private
    */
   FileManager.prototype.initAdditionalUI_ = function(callback) {
+    metrics.startInterval('Load.AdditionalUI');
     this.initDialogs_();
 
     this.dialogDom_.addEventListener('drop', function(e) {
@@ -1058,6 +1074,7 @@ var BOTTOM_MARGIN_FOR_PREVIEW_PANEL_PX = 52;
     this.table_.normalizeColumns();
     this.table_.redraw();
 
+    metrics.recordInterval('Load.AdditionalUI');
     callback();
   };