Revert of [heap] Prepare code for smaller large object allocation limit than max allocatable memory.

src/heap/spaces-inl.h

 // Copyright 2011 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.
 
 #ifndef V8_HEAP_SPACES_INL_H_
 #define V8_HEAP_SPACES_INL_H_
 
 #include "src/heap/spaces.h"
 #include "src/isolate.h"
 #include "src/msan.h"
@@ skipping 170 matching lines @@
 }
 
 
 // --------------------------------------------------------------------------
 // PagedSpace
 
 Page* Page::Initialize(Heap* heap, MemoryChunk* chunk, Executability executable,
                        PagedSpace* owner) {
   Page* page = reinterpret_cast<Page*>(chunk);
   page->mutex_ = new base::Mutex();
-  DCHECK(page->area_size() <= kAllocatableMemory);
+  DCHECK(page->area_size() <= kMaxRegularHeapObjectSize);
   DCHECK(chunk->owner() == owner);
   owner->IncreaseCapacity(page->area_size());
   owner->Free(page->area_start(), page->area_size());
 
   heap->incremental_marking()->SetOldSpacePageFlags(chunk);
 
   return page;
 }
 
 
@@ skipping 282 matching lines @@
 
 
 intptr_t LargeObjectSpace::Available() {
   return ObjectSizeFor(heap()->isolate()->memory_allocator()->Available());
 }
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_HEAP_SPACES_INL_H_