Respect old space allocation limit in PagedSpace::AllocateRaw.

src/heap/heap-inl.h

 // Copyright 2012 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_HEAP_INL_H_
 #define V8_HEAP_HEAP_INL_H_
 
 #include <cmath>
 
 #include "src/base/platform/platform.h"
@@ skipping 680 matching lines @@
 
 
 void Heap::CompletelyClearInstanceofCache() {
   set_instanceof_cache_map(Smi::FromInt(0));
   set_instanceof_cache_function(Smi::FromInt(0));
 }
 
 
 AlwaysAllocateScope::AlwaysAllocateScope(Isolate* isolate)
     : heap_(isolate->heap()), daf_(isolate) {
-  // We shouldn't hit any nested scopes, because that requires
-  // non-handle code to call handle code. The code still works but
-  // performance will degrade, so we want to catch this situation
-  // in debug mode.
-  DCHECK(heap_->always_allocate_scope_depth_ == 0);
   heap_->always_allocate_scope_depth_++;
 }
 
 
 AlwaysAllocateScope::~AlwaysAllocateScope() {
   heap_->always_allocate_scope_depth_--;
-  DCHECK(heap_->always_allocate_scope_depth_ == 0);
 }
 
 
 GCCallbacksScope::GCCallbacksScope(Heap* heap) : heap_(heap) {
   heap_->gc_callbacks_depth_++;
 }
 
 
 GCCallbacksScope::~GCCallbacksScope() { heap_->gc_callbacks_depth_--; }
 
@@ skipping 16 matching lines @@
 
 void VerifySmisVisitor::VisitPointers(Object** start, Object** end) {
   for (Object** current = start; current < end; current++) {
     CHECK((*current)->IsSmi());
   }
 }
 }
 }  // namespace v8::internal
 
 #endif  // V8_HEAP_HEAP_INL_H_