kSynthetic        260 include/v8-profiler.h kSynthetic = 9    // Synthetic object, usualy used for grouping
kSynthetic        516 src/profile-generator.h kSynthetic = v8::HeapGraphNode::kSynthetic
kSynthetic        516 src/profile-generator.h kSynthetic = v8::HeapGraphNode::kSynthetic