Reland of "[heap] Switch to 500k pages"

test/cctest/heap/test-heap.cc

Index: test/cctest/heap/test-heap.cc
diff --git a/test/cctest/heap/test-heap.cc b/test/cctest/heap/test-heap.cc
index 81c4aed7036e82edd3f322dc03532b9c4e07bca0..da61f53242b3619b4dbfae42dd9fc7403b942cd3 100644
--- a/test/cctest/heap/test-heap.cc
+++ b/test/cctest/heap/test-heap.cc
@@ -5598,8 +5598,8 @@ UNINITIALIZED_TEST(Regress538257) {
   i::FLAG_manual_evacuation_candidates_selection = true;
   v8::Isolate::CreateParams create_params;
   // Set heap limits.
-  create_params.constraints.set_max_semi_space_size(1 * Page::kPageSize / MB);
-  create_params.constraints.set_max_old_space_size(6 * Page::kPageSize / MB);
+  create_params.constraints.set_max_semi_space_size(1);
+  create_params.constraints.set_max_old_space_size(6);
   create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
   v8::Isolate* isolate = v8::Isolate::New(create_params);
   isolate->Enter();