Add a PLACEHOLDER code kind.

src/log.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/log.h"
 
 #include <cstdarg>
 #include <sstream>
 
 #include "src/bailout-reason.h"
@@ skipping 1625 matching lines @@
       tag = Logger::CALL_IC_TAG;
       break;
     case Code::STORE_IC:
       description = "A store IC from the snapshot";
       tag = Logger::STORE_IC_TAG;
       break;
     case Code::KEYED_STORE_IC:
       description = "A keyed store IC from the snapshot";
       tag = Logger::KEYED_STORE_IC_TAG;
       break;
+    case Code::PLACEHOLDER:
+      description = "A placeholder for linking later code";
+      tag = Logger::STUB_TAG;
+      break;
     case Code::NUMBER_OF_KINDS:
       break;
   }
   PROFILE(isolate_, CodeCreateEvent(tag, code_object, description));
 }
 
 
 void Logger::LogCodeObjects() {
   Heap* heap = isolate_->heap();
   heap->CollectAllGarbage(Heap::kMakeHeapIterableMask,
@@ skipping 245 matching lines @@
     removeCodeEventListener(jit_logger_);
     delete jit_logger_;
     jit_logger_ = NULL;
   }
 
   return log_->Close();
 }
 
 }  // namespace internal
 }  // namespace v8