Perform TODO(gc) cleanup for TODO-lockdown.

src/profile-generator.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 2680 matching lines @@
  private:
   HeapSnapshot* snapshot_;
   HeapSnapshotsCollection* collection_;
   HeapEntriesMap* entries_;
 };
 
 
 bool HeapSnapshotGenerator::GenerateSnapshot() {
   v8_heap_explorer_.TagGlobalObjects();
 
-  // TODO(gc) Profiler assumes that any object that is in the heap after
+  // TODO(1562) Profiler assumes that any object that is in the heap after
   // full GC is reachable from the root when computing dominators.
   // This is not true for weakly reachable objects.
   // As a temporary solution we call GC twice.
   Isolate::Current()->heap()->CollectAllGarbage(Heap::kMakeHeapIterableMask);
   Isolate::Current()->heap()->CollectAllGarbage(Heap::kMakeHeapIterableMask);
 
   // Iterator creation should follow TagGlobalObjects as it can allocate.
   HeapIterator set_progress_heap_iterator;
   HeapIterator count_entries_heap_iterator;
   HeapIterator fill_references_heap_iterator;
@@ skipping 560 matching lines @@
   sorted_entries->Sort(SortUsingEntryValue);
 }
 
 
 String* GetConstructorNameForHeapProfile(JSObject* object) {
   if (object->IsJSFunction()) return HEAP->closure_symbol();
   return object->constructor_name();
 }
 
 } }  // namespace v8::internal