[DevTools] Remove Object.values and Object.isEmpty from utilities.js

third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js

Index: third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js
diff --git a/third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js b/third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js
index 8445e62d03fc6af7cd28df2ca4b3a799acedf6e0..d05376f5d6ce4e86f1c458d16108e63c93ecabaa 100644
--- a/third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js
+++ b/third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js
@@ -1156,11 +1156,13 @@ WebInspector.TimelineUIUtils._generateInvalidationsForType = function(type, targ
     contentHelper.appendElementRow(title, invalidationsTreeOutline.element, false, true);
 
     /**
-     * @param {!Array.<!WebInspector.InvalidationTrackingEvent>} invalidations
+     * @param {!Array<!WebInspector.InvalidationTrackingEvent>} invalidations
+     * @return {!Array<!Array<!WebInspector.InvalidationTrackingEvent>>}
      */
     function groupInvalidationsByCause(invalidations)
     {
-        var causeToInvalidationMap = {};
+        /** @type {!Map<string, !Array<!WebInspector.InvalidationTrackingEvent>>} */
+        var causeToInvalidationMap = new Map();
         for (var index = 0; index < invalidations.length; index++) {
             var invalidation = invalidations[index];
             var causeKey = "";
@@ -1176,12 +1178,12 @@ WebInspector.TimelineUIUtils._generateInvalidationsForType = function(type, targ
                 });
             }
 
-            if (causeToInvalidationMap[causeKey])
-                causeToInvalidationMap[causeKey].push(invalidation);
+            if (causeToInvalidationMap.has(causeKey))
+                causeToInvalidationMap.get(causeKey).push(invalidation);
             else
-                causeToInvalidationMap[causeKey] = [ invalidation ];
+                causeToInvalidationMap.set(causeKey, [ invalidation ]);
         }
-        return Object.values(causeToInvalidationMap);
+        return Array.from(causeToInvalidationMap.values());

[lushnikov, 2016/07/20 03:02:50]

valuesArray

[kozy, 2016/07/20 17:55:19]

Done.

     }
 }