[heap] Move PromotionQueue implementation out of heap.h

src/heap/heap.cc

 // 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.
 
 #include "src/heap/heap.h"
 
 #include "src/accessors.h"
 #include "src/api.h"
 #include "src/ast/context-slot-cache.h"
 #include "src/base/bits.h"
@@ skipping 1537 matching lines @@
   DCHECK((Page::kPageSize - MemoryChunk::kBodyOffset) % (2 * kPointerSize) ==
          0);
   front_ = rear_ =
       reinterpret_cast<struct Entry*>(heap_->new_space()->ToSpaceEnd());
   limit_ = reinterpret_cast<struct Entry*>(
       Page::FromAllocationAreaAddress(reinterpret_cast<Address>(rear_))
           ->area_start());
   emergency_stack_ = NULL;
 }
 
+void PromotionQueue::Destroy() {
+  DCHECK(is_empty());
+  delete emergency_stack_;
+  emergency_stack_ = NULL;
+}
 
 void PromotionQueue::RelocateQueueHead() {
   DCHECK(emergency_stack_ == NULL);
 
   Page* p = Page::FromAllocationAreaAddress(reinterpret_cast<Address>(rear_));
   struct Entry* head_start = rear_;
   struct Entry* head_end =
       Min(front_, reinterpret_cast<struct Entry*>(p->area_end()));
 
   int entries_count =
@@ skipping 4954 matching lines @@
 }
 
 
 // static
 int Heap::GetStaticVisitorIdForMap(Map* map) {
   return StaticVisitorBase::GetVisitorId(map);
 }
 
 }  // namespace internal
 }  // namespace v8