Revert of [debugger] remove debugger statement support from FCG/CS.

src/assembler.cc

Index: src/assembler.cc
diff --git a/src/assembler.cc b/src/assembler.cc
index 47cf946d26ac3739b70bcfe3b5d5bce7cf2ae85b..e5ed505a5559d660b03ccc64bb72983ddbd5a776 100644
--- a/src/assembler.cc
+++ b/src/assembler.cc
@@ -725,6 +725,8 @@
       return "no reloc 64";
     case EMBEDDED_OBJECT:
       return "embedded object";
+    case DEBUGGER_STATEMENT:
+      return "debugger statement";
     case CODE_TARGET:
       return "code target";
     case CODE_TARGET_WITH_ID:
@@ -832,6 +834,7 @@
     case CELL:
       Object::VerifyPointer(target_cell());
       break;
+    case DEBUGGER_STATEMENT:
     case CODE_TARGET_WITH_ID:
     case CODE_TARGET: {
       // convert inline target address to code object