DevTools: Treat system object distances with less priority

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 f37c747715bd2a4bd94d73f27cc0604556348e33..72592145a60f8ab64bfabc8232ee42a8a541cddf 100644
--- a/Source/devtools/front_end/HeapSnapshot.js
+++ b/Source/devtools/front_end/HeapSnapshot.js
@@ -935,6 +935,8 @@ function HeapSnapshotHeader()
     this.edge_count = 0;
 }
 
+WebInspector.HeapSnapshot._baseSystemDistance = 100000000;

[yurys, 2014/04/03 09:15:12]

You can place this constant into HeapSnapshotCommon instead.

[alph, 2014/04/03 09:30:48]

Done.

+
 WebInspector.HeapSnapshot.prototype = {
     _init: function()
     {
@@ -1329,7 +1331,7 @@ WebInspector.HeapSnapshot.prototype = {
 
         // bfs for the rest of objects
         nodesToVisitLength = 0;
-        this.forEachRoot(enqueueNode.bind(null, 0), false);
+        this.forEachRoot(enqueueNode.bind(null, WebInspector.HeapSnapshot._baseSystemDistance), false);
         this._bfs(nodesToVisit, nodesToVisitLength, distances);
     },
 
@@ -2043,7 +2045,12 @@ WebInspector.HeapSnapshot.prototype = {
      */
     updateStaticData: function()
     {
-        return new WebInspector.HeapSnapshotCommon.StaticData(this.nodeCount, this._rootNodeIndex, this.totalSize, this._maxJsNodeId());
+        return new WebInspector.HeapSnapshotCommon.StaticData(
+            this.nodeCount,
+            this._rootNodeIndex,
+            this.totalSize,
+            this._maxJsNodeId(),
+            WebInspector.HeapSnapshot._baseSystemDistance);
     }
 };