Retire concurrent recompilation delay for non-stress testing.

test/mjsunit/compiler/concurrent-proto-change.js

Index: test/mjsunit/compiler/concurrent-proto-change.js
diff --git a/test/mjsunit/compiler/parallel-proto-change.js b/test/mjsunit/compiler/concurrent-proto-change.js
similarity index 87%
rename from test/mjsunit/compiler/parallel-proto-change.js
rename to test/mjsunit/compiler/concurrent-proto-change.js
index 76022798934329461b86779beda093394b3bd9d9..e126465a9566f2c540515185326061767e7caef0 100644
--- a/test/mjsunit/compiler/parallel-proto-change.js
+++ b/test/mjsunit/compiler/concurrent-proto-change.js
@@ -26,7 +26,7 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // Flags: --allow-natives-syntax
-// Flags: --concurrent-recompilation --concurrent-recompilation-delay=50
+// Flags: --concurrent-recompilation --block-concurrent-recompilation
 
 if (!%IsConcurrentRecompilationSupported()) {
   print("Concurrent recompilation is disabled. Skipping this test.");
@@ -43,12 +43,14 @@ assertEquals(1, f(o));
 
 // Mark for concurrent optimization.
 %OptimizeFunctionOnNextCall(f, "concurrent");
-// Trigger optimization in the background thread.
+// Kick off recompilation.
 assertEquals(1, f(o));
-// While concurrent recompilation is running, optimization not yet done.
-assertUnoptimized(f, "no sync");
-// Change the prototype chain during optimization to trigger map invalidation.
+// Change the prototype chain after compile graph has been created.
 o.__proto__.__proto__ = { bar: function() { return 2; } };
+// At this point, concurrent recompilation thread has not yet done its job.
+assertUnoptimized(f, "no sync");
+// Let the background thread proceed.
+%UnblockConcurrentRecompilation();
 // Optimization eventually bails out due to map dependency.
 assertUnoptimized(f, "sync");
 assertEquals(2, f(o));