Rename "parallel recompilation" to "concurrent recompilation".

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index 6c1ecbb322ea00211813ba6c9584fcbf8a227b5b..431b674eaf75f2869e04f4468346c3af5d5c2085 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -4958,9 +4958,9 @@ bool JSFunction::IsMarkedForInstallingRecompiledCode() {
 }
 
 
-bool JSFunction::IsMarkedForParallelRecompilation() {
+bool JSFunction::IsMarkedForConcurrentRecompilation() {
   return code() == GetIsolate()->builtins()->builtin(
-      Builtins::kParallelRecompile);
+      Builtins::kConcurrentRecompile);
 }