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

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index 74bfc29174b58be98ed1dc490fa8ebd9a94d4e37..97291ce5c54cb3fa9e5939166ae1691a3f04f2ff 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -1062,13 +1062,6 @@ class Isolate {
     thread_local_top_.top_lookup_result_ = top;
   }
 
-  bool context_exit_happened() {
-    return context_exit_happened_;
-  }
-  void set_context_exit_happened(bool context_exit_happened) {
-    context_exit_happened_ = context_exit_happened;
-  }
-
   bool initialized_from_snapshot() { return initialized_from_snapshot_; }
 
   double time_millis_since_init() {
@@ -1317,10 +1310,6 @@ class Isolate {
   unibrow::Mapping<unibrow::Ecma262Canonicalize> interp_canonicalize_mapping_;
   CodeStubInterfaceDescriptor* code_stub_interface_descriptors_;
 
-  // The garbage collector should be a little more aggressive when it knows
-  // that a context was recently exited.
-  bool context_exit_happened_;
-
   // True if this isolate was initialized from a snapshot.
   bool initialized_from_snapshot_;