[WIP] Added CodeEventListener to the sampler API.

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index 4fc2fb4f6d82c274d7bd52f1807ba7b288790c50..564772410e02e401213dae84bf92bf8b68c6dbde 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -366,6 +366,7 @@ typedef List<HeapObject*> DebugObjectCache;
   V(uint32_t, per_isolate_assert_data, 0xFFFFFFFFu)                            \
   V(InterruptCallback, api_interrupt_callback, NULL)                           \
   V(void*, api_interrupt_callback_data, NULL)                                  \
+  V(v8::CodeEventHandler*, code_event_handler, NULL)                           \
   ISOLATE_INIT_SIMULATOR_LIST(V)
 
 #define THREAD_LOCAL_TOP_ACCESSOR(type, name)                        \
@@ -1097,6 +1098,17 @@ class Isolate {
   void SetUseCounterCallback(v8::Isolate::UseCounterCallback callback);
   void CountUsage(v8::Isolate::UseCounterFeature feature);
 
+  // For sampler public API
+  void CodeCreateEvent(Code* code, const char* source);
+  void CodeCreateEvent(Code* code, Name* name);
+  void CodeCreateEvent(Code* code, String* regexp_source);
+  void CodeCreateEvent(Code* code,
+                       SharedFunctionInfo* shared,
+                       Name* source, int line, int column);
+  void CodeCreateEvent(Address from,
+                       const char* name_prefix,
+                       Name* name);
+
  private:
   static void EnsureInitialized();