[Devtools] Removed DataGrid's hasChildren getter/setter to use functions

third_party/WebKit/LayoutTests/inspector/profiler/heap-snapshot-test.js

Index: third_party/WebKit/LayoutTests/inspector/profiler/heap-snapshot-test.js
diff --git a/third_party/WebKit/LayoutTests/inspector/profiler/heap-snapshot-test.js b/third_party/WebKit/LayoutTests/inspector/profiler/heap-snapshot-test.js
index e6c8e4fe1ae56c862eca8f98604dff38224f4fc2..11654b30a86b6989910f7bf5709d6958953c15a1 100644
--- a/third_party/WebKit/LayoutTests/inspector/profiler/heap-snapshot-test.js
+++ b/third_party/WebKit/LayoutTests/inspector/profiler/heap-snapshot-test.js
@@ -619,7 +619,7 @@ InspectorTest.expandRow = function(row, callback)
     row.addEventListener(Profiler.HeapSnapshotGridNode.Events.PopulateComplete, populateComplete, this);
     (function expand()
     {
-        if (row.hasChildren)
+        if (row.hasChildren())
             row.expand();
         else
             setTimeout(expand, 0);