Add a new API V8::SetJitCodeEventHandler to push code name and location to users such as profilers.

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 23e8c571caaea1140645b5bf2daa577b41a9d04f..101361db0dab0248d7f7cc090e973cd8c49bf0db 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -4263,6 +4263,15 @@ bool v8::V8::SetFunctionEntryHook(FunctionEntryHook entry_hook) {
 }
 
 
+void v8::V8::SetJitCodeEventHandler(
+    JitCodeEventOptions options, JitCodeEventHandler event_handler) {
+  i::Isolate* isolate = i::Isolate::Current();
+  // Ensure that logging is initialized for our isolate.
+  isolate->InitializeLoggingAndCounters();
+  isolate->logger()->SetCodeEventHandler(options, event_handler);
+}
+
+
 bool v8::V8::Dispose() {
   i::Isolate* isolate = i::Isolate::Current();
   if (!ApiCheck(isolate != NULL && isolate->IsDefaultIsolate(),