[heap] Set progress bar flag for FixedArray upon allocation

src/snapshot/deserializer.cc

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/snapshot/deserializer.h"
 
 #include "src/bootstrapper.h"
 #include "src/external-reference-table.h"
 #include "src/heap/heap.h"
 #include "src/isolate.h"
@@ skipping 396 matching lines @@
 // Since multiple large objects cannot be folded into one large object
 // space allocation, we have to do an actual allocation when deserializing
 // each large object. Instead of tracking offset for back references, we
 // reference large objects by index.
 Address Deserializer::Allocate(int space_index, int size) {
   if (space_index == LO_SPACE) {
     AlwaysAllocateScope scope(isolate_);
     LargeObjectSpace* lo_space = isolate_->heap()->lo_space();
     Executability exec = static_cast<Executability>(source_.Get());
     AllocationResult result = lo_space->AllocateRaw(size, exec);
-    HeapObject* obj = HeapObject::cast(result.ToObjectChecked());
+    HeapObject* obj = result.ToObjectChecked();
     deserialized_large_objects_.Add(obj);
     return obj->address();
   } else if (space_index == MAP_SPACE) {
     DCHECK_EQ(Map::kSize, size);
     return allocated_maps_[next_map_index_++];
   } else {
     DCHECK(space_index < kNumberOfPreallocatedSpaces);
     Address address = high_water_[space_index];
     DCHECK_NOT_NULL(address);
     high_water_[space_index] += size;
@@ skipping 397 matching lines @@
 
       default:
         CHECK(false);
     }
   }
   CHECK_EQ(limit, current);
   return true;
 }
 }  // namespace internal
 }  // namespace v8