Re-reland "Flush parallel recompilation queues on context dispose notification"

src/heap.cc

Index: src/heap.cc
diff --git a/src/heap.cc b/src/heap.cc
index 53088e289f4979a49e610a1d7c0ee1200a8736e2..796439a8d394887ad15ed9432cb6ba6b02290407 100644
--- a/src/heap.cc
+++ b/src/heap.cc
@@ -703,6 +703,16 @@ bool Heap::CollectGarbage(AllocationSpace space,
 }
 
 
+int Heap::NotifyContextDisposed() {
+  if (FLAG_parallel_recompilation) {
+    // Flush the queued recompilation tasks.
+    isolate()->optimizing_compiler_thread()->Flush();
+  }
+  flush_monomorphic_ics_ = true;
+  return ++contexts_disposed_;
+}
+
+
 void Heap::PerformScavenge() {
   GCTracer tracer(this, NULL, NULL);
   if (incremental_marking()->IsStopped()) {