Revert of Remove support for thread-based recompilation

src/debug.cc

Index: src/debug.cc
diff --git a/src/debug.cc b/src/debug.cc
index 66b0e0a0ef3ee09a8c22fd6461285d1655f73855..c1b301276fc9b00f63f23dfba177cfe0ddc80136 100644
--- a/src/debug.cc
+++ b/src/debug.cc
@@ -1842,7 +1842,7 @@ void Debug::PrepareForBreakPoints() {
   // functions as debugging does not work with optimized code.
   if (!has_break_points_) {
     if (isolate_->concurrent_recompilation_enabled()) {
-      isolate_->optimizing_compile_dispatcher()->Flush();
+      isolate_->optimizing_compiler_thread()->Flush();
     }
 
     Deoptimizer::DeoptimizeAll(isolate_);