Use deadline in IdleNotification.

src/api.cc

Index: src/api.cc
diff --git a/src/api.cc b/src/api.cc
index cf032a1fe8903851f3e53a18f4f19cff8d4712fe..cb6d17c8e79f236422dd1b8a9f4653cc5f1ab7b0 100644
--- a/src/api.cc
+++ b/src/api.cc
@@ -6629,6 +6629,15 @@ bool Isolate::IdleNotification(int idle_time_in_ms) {
 }
 
 
+bool Isolate::IdleNotification(double deadline) {
+  // Returning true tells the caller that it need not
+  // continue to call IdleNotification.
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
+  if (!i::FLAG_use_idle_notification) return true;
+  return isolate->heap()->IdleNotification(deadline);
+}
+
+
 void Isolate::LowMemoryNotification() {
   i::Isolate* isolate = reinterpret_cast<i::Isolate*>(this);
   {