[heap] Fix top_on_previous_step_ check in NewSpace::AllocateRaw.

See also: https://chromium-review.googlesource.com/c/v8/v8/+/738204

BUG=chromium:791582

Change-Id: Ife3acf35eeaa6fdebd5ea2fabc1678ec762b3ed3
Reviewed-on: https://chromium-review.googlesource.com/806516Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Commit-Queue: Ali Ijaz Sheikh <ofrobots@google.com>
Cr-Commit-Position: refs/heads/master@{#49873}

src/heap/spaces-inl.h

@@ -464,8 +464,8 @@ AllocationResult NewSpace::AllocateRaw(int size_in_bytes,
                                        AllocationAlignment alignment) {
   if (top() < top_on_previous_step_) {
     // Generated code decreased the top() pointer to do folded allocations
-    DCHECK_EQ(Page::FromAddress(top()),
-              Page::FromAddress(top_on_previous_step_));
+    DCHECK_EQ(Page::FromAllocationAreaAddress(top()),
+              Page::FromAllocationAreaAddress(top_on_previous_step_));
     top_on_previous_step_ = top();
   }
 #ifdef V8_HOST_ARCH_32_BIT