[heap] Disable concurrent marking for cctests that rely on manual GC.

test/cctest/heap/test-compaction.cc

Index: test/cctest/heap/test-compaction.cc
diff --git a/test/cctest/heap/test-compaction.cc b/test/cctest/heap/test-compaction.cc
index 856f7be198820d08228efc4ed9f83c8b7344cb6a..235e1e979a3e8dcc6fee30fee701e87a8ecf98fd 100644
--- a/test/cctest/heap/test-compaction.cc
+++ b/test/cctest/heap/test-compaction.cc
@@ -47,6 +47,7 @@ HEAP_TEST(CompactionFullAbortedPage) {
   // Disable concurrent sweeping to ensure memory is in an expected state, i.e.,
   // we can reach the state of a half aborted page.
   FLAG_concurrent_sweeping = false;
+  FLAG_concurrent_marking = false;
   FLAG_stress_incremental_marking = false;
   FLAG_manual_evacuation_candidates_selection = true;
   CcTest::InitializeVM();
@@ -90,6 +91,7 @@ HEAP_TEST(CompactionPartiallyAbortedPage) {
   // Disable concurrent sweeping to ensure memory is in an expected state, i.e.,
   // we can reach the state of a half aborted page.
   FLAG_concurrent_sweeping = false;
+  FLAG_concurrent_marking = false;
   FLAG_stress_incremental_marking = false;
   FLAG_manual_evacuation_candidates_selection = true;
 
@@ -165,6 +167,7 @@ HEAP_TEST(CompactionPartiallyAbortedPageIntraAbortedPointers) {
   // Disable concurrent sweeping to ensure memory is in an expected state, i.e.,
   // we can reach the state of a half aborted page.
   FLAG_concurrent_sweeping = false;
+  FLAG_concurrent_marking = false;
   FLAG_stress_incremental_marking = false;
   FLAG_manual_evacuation_candidates_selection = true;
 
@@ -253,6 +256,7 @@ HEAP_TEST(CompactionPartiallyAbortedPageWithStoreBufferEntries) {
   // Disable concurrent sweeping to ensure memory is in an expected state, i.e.,
   // we can reach the state of a half aborted page.
   FLAG_concurrent_sweeping = false;
+  FLAG_concurrent_marking = false;
   FLAG_stress_incremental_marking = false;
   FLAG_manual_evacuation_candidates_selection = true;