Re-revert "Flush parallel recompilation queues on context dispose notification" (r15883).

src/api.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 752 matching lines @@
   if (!ApiCheck(isolate->handle_scope_implementer()->LeaveLastContext(),
                 "v8::Context::Exit()",
                 "Cannot exit non-entered context")) {
     return;
   }
 
   // Content of 'last_context' could be NULL.
   i::Context* last_context =
       isolate->handle_scope_implementer()->RestoreContext();
   isolate->set_context(last_context);
+  isolate->set_context_exit_happened(true);
 }
 
 
 static void* DecodeSmiToAligned(i::Object* value, const char* location) {
   ApiCheck(value->IsSmi(), location, "Not a Smi");
   return reinterpret_cast<void*>(value);
 }
 
 
 static i::Smi* EncodeAlignedAsSmi(void* value, const char* location) {
@@ skipping 7314 matching lines @@
   Isolate* isolate = reinterpret_cast<Isolate*>(info.GetIsolate());
   Address callback_address =
       reinterpret_cast<Address>(reinterpret_cast<intptr_t>(callback));
   VMState<EXTERNAL> state(isolate);
   ExternalCallbackScope call_scope(isolate, callback_address);
   return callback(info);
 }
 
 
 } }  // namespace v8::internal