[fullcodegen] Implement operand stack depth tracking.

src/objects-printer.cc

Index: src/objects-printer.cc
diff --git a/src/objects-printer.cc b/src/objects-printer.cc
index 49b746b42362e3b5dc1f9eb521b85d331fe5fad9..b8958aba5a3d35cc93c3b7e68bcd7effd1e8a5d2 100644
--- a/src/objects-printer.cc
+++ b/src/objects-printer.cc
@@ -946,6 +946,7 @@ void WeakCell::WeakCellPrint(std::ostream& os) {  // NOLINT
 
 void Code::CodePrint(std::ostream& os) {  // NOLINT
   HeapObject::PrintHeader(os, "Code");
+  os << "\n";
 #ifdef ENABLE_DISASSEMBLER
   if (FLAG_use_verbose_printer) {
     Disassemble(NULL, os);