Add support for allowing an embedder to get the V8 profile timer event logs.

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index 2c7db3be1656f10d475dd8e1de71a89ed374cdd6..ebaac1e9942f0bc2ebbea53ce4428cba6fe20ee9 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -401,6 +401,12 @@ void V8::SetFatalErrorHandler(FatalErrorCallback that) {
 }
 
 
+void V8::SetEventLogger(LogEventCallback that) {
+  i::Isolate* isolate = EnterIsolateIfNeeded();
+  isolate->set_event_logger(that);

[Sven Panne, 2014/03/05 07:47:29]

This line is a *very* strong hint that SetEventLogger is in the wrong class: It
should be a normal member function within Isolate. Furthermore, using
EnterIsolateIfNeeded is a hack and should not be used.

[Yang, 2014/03/05 08:18:31]

I agree. I would also suggest adding it to V8::Isolate. 

[fmeawad, 2014/03/06 00:24:46]

Done.

+}
+
+
 void V8::SetAllowCodeGenerationFromStringsCallback(
     AllowCodeGenerationFromStringsCallback callback) {
   i::Isolate* isolate = EnterIsolateIfNeeded();