[Devtools] Bug fix of event dividers not showing in network panel

third_party/WebKit/Source/devtools/front_end/network/NetworkLogViewColumns.js

Index: third_party/WebKit/Source/devtools/front_end/network/NetworkLogViewColumns.js
diff --git a/third_party/WebKit/Source/devtools/front_end/network/NetworkLogViewColumns.js b/third_party/WebKit/Source/devtools/front_end/network/NetworkLogViewColumns.js
index da5ab6ba8e0677a5755d5897caa8141cbab2a9a4..8623c8b3e7d1bdc36a2bb190f8f564ebbd27b2a5 100644
--- a/third_party/WebKit/Source/devtools/front_end/network/NetworkLogViewColumns.js
+++ b/third_party/WebKit/Source/devtools/front_end/network/NetworkLogViewColumns.js
@@ -815,6 +815,21 @@ WebInspector.NetworkLogViewColumns.prototype = {
         this._timelineGrid.showEventDividers();
     },
 
+    /**
+     * @param {number} time
+     */
+    selectFilmStripFrame: function(time)
+    {
+        for (var divider of this._eventDividers)
+            divider.element.classList.toggle("network-frame-divider-selected", divider.time === time);
+    },
+
+    clearFilmStripFrame: function()
+    {
+        for (var divider of this._eventDividers)
+            divider.element.classList.toggle("network-frame-divider-selected", false);
+    },
+
     _updateRowsSize: function()
     {
         if (Runtime.experiments.isEnabled("canvasNetworkTimeline"))