ManualGCScope: Disable ineffective GC detection

The manual scope is usually used to test corner cases of GC behavior so
disable the ineffective GC detecton there.

Bug: v8:7859
Change-Id: I92a1e43db739846ff0db20a60cc2ace79496e5fe
Reviewed-on: https://chromium-review.googlesource.com/1135140Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54418}

test/cctest/cctest.h

@@ -640,18 +640,23 @@ class ManualGCScope {
       : flag_concurrent_marking_(i::FLAG_concurrent_marking),
         flag_concurrent_sweeping_(i::FLAG_concurrent_sweeping),
         flag_stress_incremental_marking_(i::FLAG_stress_incremental_marking),
-        flag_parallel_marking_(i::FLAG_parallel_marking) {
+        flag_parallel_marking_(i::FLAG_parallel_marking),
+        flag_detect_ineffective_gcs_near_heap_limit_(
+            i::FLAG_detect_ineffective_gcs_near_heap_limit) {
     i::FLAG_concurrent_marking = false;
     i::FLAG_concurrent_sweeping = false;
     i::FLAG_stress_incremental_marking = false;
     // Parallel marking has a dependency on concurrent marking.
     i::FLAG_parallel_marking = false;
+    i::FLAG_detect_ineffective_gcs_near_heap_limit = false;
   }
   ~ManualGCScope() {
     i::FLAG_concurrent_marking = flag_concurrent_marking_;
     i::FLAG_concurrent_sweeping = flag_concurrent_sweeping_;
     i::FLAG_stress_incremental_marking = flag_stress_incremental_marking_;
     i::FLAG_parallel_marking = flag_parallel_marking_;
+    i::FLAG_detect_ineffective_gcs_near_heap_limit =
+        flag_detect_ineffective_gcs_near_heap_limit_;
   }
 
  private:
@@ -659,6 +664,7 @@ class ManualGCScope {
   bool flag_concurrent_sweeping_;
   bool flag_stress_incremental_marking_;
   bool flag_parallel_marking_;
+  bool flag_detect_ineffective_gcs_near_heap_limit_;
 };
 
 // This is an abstract base class that can be overridden to implement a test

test/cctest/cctest.status

@@ -125,9 +125,6 @@
   'test-serialize/SnapshotCreatorNoExternalReferencesCustomFail1': [FAIL],
   'test-serialize/SnapshotCreatorNoExternalReferencesCustomFail2': [FAIL],
 
-  # https://crbug.com/v8/7859
-  'test-heap/Regress538257': [SKIP],
-
   ############################################################################
   # Slow tests.
   'test-debug/CallFunctionInDebugger': [PASS, ['mode == debug', SLOW]],