[cctest] Bump max old space size for isolate creation

Bump limit for isolate creation in cctest; the test started crashing recently
on nosnap.debug builds, hence we bump the limit.

Bug: v8:7856
Change-Id: I7c2396c7f112a2ed7fc189f0fa72658e0ed75050
Reviewed-on: https://chromium-review.googlesource.com/1104691Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#53816}

test/cctest/cctest.status

@@ -116,9 +116,6 @@
   'test-api/SecondaryStubCache': [SKIP],
   'test-api/AccessCheckInIC': [SKIP],
 
-  # BUG(7856)
-  'test-api/InitializeDefaultIsolateOnSecondaryThread1': [SKIP],
-
   # BUG(3742).
   'test-mark-compact/MarkCompactCollector': [PASS, ['arch==arm', NO_VARIANTS]],
 

test/cctest/test-api.cc

@@ -20829,7 +20829,7 @@ class InitDefaultIsolateThread : public v8::base::Thread {
     switch (testCase_) {
       case SetResourceConstraints: {
         create_params.constraints.set_max_semi_space_size_in_kb(1024);
-        create_params.constraints.set_max_old_space_size(6);
+        create_params.constraints.set_max_old_space_size(8);
         break;
       }
       default:
@@ -20878,28 +20878,23 @@ static void InitializeTestHelper(InitDefaultIsolateThread::TestCase testCase) {
   CHECK(thread.result());
 }
 
-
-TEST(InitializeDefaultIsolateOnSecondaryThread1) {
+TEST(InitializeDefaultIsolateOnSecondaryThread_ResourceConstraints) {
   InitializeTestHelper(InitDefaultIsolateThread::SetResourceConstraints);
 }
 
-
-TEST(InitializeDefaultIsolateOnSecondaryThread2) {
+TEST(InitializeDefaultIsolateOnSecondaryThread_FatalHandler) {
   InitializeTestHelper(InitDefaultIsolateThread::SetFatalHandler);
 }
 
-
-TEST(InitializeDefaultIsolateOnSecondaryThread3) {
+TEST(InitializeDefaultIsolateOnSecondaryThread_CounterFunction) {
   InitializeTestHelper(InitDefaultIsolateThread::SetCounterFunction);
 }
 
-
-TEST(InitializeDefaultIsolateOnSecondaryThread4) {
+TEST(InitializeDefaultIsolateOnSecondaryThread_CreateHistogramFunction) {
   InitializeTestHelper(InitDefaultIsolateThread::SetCreateHistogramFunction);
 }
 
-
-TEST(InitializeDefaultIsolateOnSecondaryThread5) {
+TEST(InitializeDefaultIsolateOnSecondaryThread_AddHistogramSampleFunction) {
   InitializeTestHelper(InitDefaultIsolateThread::SetAddHistogramSampleFunction);
 }