Rename "parallel recompilation" to "concurrent recompilation".

test/mjsunit/parallel-invalidate-transition-map.js

Index: test/mjsunit/parallel-invalidate-transition-map.js
diff --git a/test/mjsunit/parallel-invalidate-transition-map.js b/test/mjsunit/parallel-invalidate-transition-map.js
index 716f63198cd02f4ba01af39ebd11c082d507ff0a..9a5d31003f93307f958832a7a2a4e7e3331d7d2c 100644
--- a/test/mjsunit/parallel-invalidate-transition-map.js
+++ b/test/mjsunit/parallel-invalidate-transition-map.js
@@ -26,10 +26,10 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // Flags: --track-fields --track-double-fields --allow-natives-syntax
-// Flags: --parallel-recompilation --parallel-recompilation-delay=100
+// Flags: --concurrent-recompilation --concurrent-recompilation-delay=100
 
-if (!%IsParallelRecompilationSupported()) {
-  print("Parallel recompilation is disabled. Skipping this test.");
+if (!%IsConcurrentRecompilationSupported()) {
+  print("Concurrent recompilation is disabled. Skipping this test.");
   quit();
 }
 
@@ -46,7 +46,7 @@ function add_field(obj) {
 
 add_field(new_object());
 add_field(new_object());
-%OptimizeFunctionOnNextCall(add_field, "parallel");
+%OptimizeFunctionOnNextCall(add_field, "concurrent");
 
 var o = new_object();
 // Trigger optimization in the background thread.