Remove HeapSnapshot._markInvisibleEdges

Source/devtools/front_end/HeapSnapshot.js

Index: Source/devtools/front_end/HeapSnapshot.js
diff --git a/Source/devtools/front_end/HeapSnapshot.js b/Source/devtools/front_end/HeapSnapshot.js
index e53437e425fa1d4bc965c97df7e4e27b9314b7d8..71ef49950364a05970f405f0c97ec615fe309307 100644
--- a/Source/devtools/front_end/HeapSnapshot.js
+++ b/Source/devtools/front_end/HeapSnapshot.js
@@ -951,8 +951,6 @@ WebInspector.HeapSnapshot.prototype = {
 
         this._progress.updateStatus("Building edge indexes\u2026");
         this._buildEdgeIndexes();
-        this._progress.updateStatus("Marking invisible edges\u2026");
-        this._markInvisibleEdges();
         this._progress.updateStatus("Building retainers\u2026");
         this._buildRetainers();
         this._progress.updateStatus("Calculating node flags\u2026");
@@ -1737,11 +1735,6 @@ WebInspector.HeapSnapshot.prototype = {
         }
     },
 
-    _markInvisibleEdges: function()
-    {
-        throw new Error("Not implemented");
-    },
-
     _calculateFlags: function()
     {
         throw new Error("Not implemented");