[cctest] Fix SetJitCodeEventHandler

- Remove commented out line
- Simulate full space properly, independently of flags set

Bug: 
Change-Id: I6013caae43eb40dd568fbd872eb0ee78288c61bf
Reviewed-on: https://chromium-review.googlesource.com/531084Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Michael Lippautz <mlippautz@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45874}

test/cctest/test-api.cc

@@ -14592,7 +14592,6 @@ static void event_handler(const v8::JitCodeEvent* event) {
 
 UNINITIALIZED_TEST(SetJitCodeEventHandler) {
   i::FLAG_stress_compaction = true;
-  // FLAG_stress_incremental_marking = false;
   i::FLAG_incremental_marking = false;
   if (i::FLAG_never_compact) return;
   const char* script =
@@ -14636,24 +14635,24 @@ UNINITIALIZED_TEST(SetJitCodeEventHandler) {
     for (int i = 0; i < kIterations; ++i) {
       LocalContext env(isolate);
       i::AlwaysAllocateScope always_allocate(i_isolate);
-      i::heap::SimulateFullSpace(i::FLAG_ignition || i::FLAG_turbo
-                                     ? heap->old_space()
-                                     : heap->code_space());
       CompileRun(script);
 
       // Keep a strong reference to the code object in the handle scope.
-      i::Handle<i::Code> bar_code(
-          i::Handle<i::JSFunction>::cast(
-              v8::Utils::OpenHandle(*env->Global()
-                                         ->Get(env.local(), v8_str("bar"))
-                                         .ToLocalChecked()))
-              ->code());
-      i::Handle<i::Code> foo_code(
-          i::Handle<i::JSFunction>::cast(
-              v8::Utils::OpenHandle(*env->Global()
-                                         ->Get(env.local(), v8_str("foo"))
-                                         .ToLocalChecked()))
-              ->code());
+      i::Handle<i::JSFunction> bar(i::Handle<i::JSFunction>::cast(
+          v8::Utils::OpenHandle(*env->Global()
+                                     ->Get(env.local(), v8_str("bar"))
+                                     .ToLocalChecked())));
+      i::Handle<i::JSFunction> foo(i::Handle<i::JSFunction>::cast(
+          v8::Utils::OpenHandle(*env->Global()
+                                     ->Get(env.local(), v8_str("foo"))
+                                     .ToLocalChecked())));
+
+      i::PagedSpace* foo_owning_space = reinterpret_cast<i::PagedSpace*>(
+          i::Page::FromAddress(foo->abstract_code()->address())->owner());
+      i::PagedSpace* bar_owning_space = reinterpret_cast<i::PagedSpace*>(
+          i::Page::FromAddress(bar->abstract_code()->address())->owner());
+      CHECK_EQ(foo_owning_space, bar_owning_space);
+      i::heap::SimulateFullSpace(foo_owning_space);
 
       // Clear the compilation cache to get more wastage.
       reinterpret_cast<i::Isolate*>(isolate)->compilation_cache()->Clear();