DevTools: Nuke Dominators view from heap profiler.

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

 var initialize_HeapSnapshotTest = function() {
 
 InspectorTest.createHeapSnapshotMockFactories = function() {
 
 InspectorTest.createJSHeapSnapshotMockObject = function()
 {
     return {
         _rootNodeIndex: 0,
         _nodeTypeOffset: 0,
         _nodeNameOffset: 1,
@@ skipping 407 matching lines @@
     // We mock out HeapProfilerAgent -- as DRT runs in single-process mode, Inspector
     // and test share the same heap. Taking a snapshot takes too long for a test,
     // so we provide synthetic snapshots.
     InspectorTest._panelReset = InspectorTest.override(WebInspector.panels.profiles, "_reset", function(){}, true);
     InspectorTest.addSniffer(WebInspector.HeapSnapshotView.prototype, "show", InspectorTest._snapshotViewShown, true);
 
     // Reduce the number of populated nodes to speed up testing.
     WebInspector.HeapSnapshotContainmentDataGrid.prototype.defaultPopulateCount = function() { return 10; };
     WebInspector.HeapSnapshotConstructorsDataGrid.prototype.defaultPopulateCount = function() { return 10; };
     WebInspector.HeapSnapshotDiffDataGrid.prototype.defaultPopulateCount = function() { return 5; };
-    WebInspector.HeapSnapshotDominatorsDataGrid.prototype.defaultPopulateCount = function() { return 3; }
     InspectorTest.addResult("Detailed heap profiles were enabled.");
     InspectorTest.safeWrap(callback)();
 };
 
 InspectorTest.completeProfilerTest = function()
 {
     // There is no way to disable detailed heap profiles.
     InspectorTest.addResult("");
     InspectorTest.addResult("Profiler was disabled.");
     InspectorTest.completeTest();
@@ skipping 287 matching lines @@
         function sortingComplete()
         {
             dataGrid.removeEventListener(WebInspector.HeapSnapshotSortableDataGrid.Events.SortingComplete, sortingComplete, null);
             callback();
         }
         dataGrid.addEventListener(WebInspector.HeapSnapshotSortableDataGrid.Events.SortingComplete, sortingComplete, null);
     }
 };
 
 };