[zone][cleanup] Remove uses of DISALLOW_COPY_AND_ASSIGN

Replace by explicitly deleting the copy constructor and copy assignment
operator.

R=zhin@chromium.org

Bug: v8:11074
Change-Id: If312e920b1ef42f8ef667f3b81066ff2aad054e4
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2523316Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71104}

src/zone/accounting-allocator.h

@@ -26,6 +26,8 @@ class Zone;
 class V8_EXPORT_PRIVATE AccountingAllocator {
  public:
   AccountingAllocator();
+  AccountingAllocator(const AccountingAllocator&) = delete;
+  AccountingAllocator& operator=(const AccountingAllocator&) = delete;
   virtual ~AccountingAllocator();
 
   // Allocates a new segment. Returns nullptr on failed allocation.
@@ -69,8 +71,6 @@ class V8_EXPORT_PRIVATE AccountingAllocator {
 
   std::unique_ptr<VirtualMemory> reserved_area_;
   std::unique_ptr<base::BoundedPageAllocator> bounded_page_allocator_;
-
-  DISALLOW_COPY_AND_ASSIGN(AccountingAllocator);
 };
 
 }  // namespace internal

src/zone/zone-chunk-list.h

@@ -60,6 +60,9 @@ class ZoneChunkList : public ZoneObject {
     }
   }
 
+  ZoneChunkList(const ZoneChunkList&) = delete;
+  ZoneChunkList& operator=(const ZoneChunkList&) = delete;
+
   size_t size() const { return size_; }
   bool is_empty() const { return size() == 0; }
 
@@ -139,8 +142,6 @@ class ZoneChunkList : public ZoneObject {
   size_t size_ = 0;
   Chunk* front_ = nullptr;
   Chunk* back_ = nullptr;
-
-  DISALLOW_COPY_AND_ASSIGN(ZoneChunkList);
 };
 
 template <typename T, bool backwards, bool modifiable>

src/zone/zone-list.h

@@ -48,6 +48,9 @@ class ZoneList final : public ZoneObject {
 
   ZoneList(ZoneList<T>&& other) V8_NOEXCEPT { *this = std::move(other); }
 
+  ZoneList(const ZoneList&) = delete;
+  ZoneList& operator=(const ZoneList&) = delete;
+
   // The ZoneList objects are usually allocated as a fields in other
   // zone-allocated objects for which destructors are not called anyway, so
   // we are not going to clear the memory here as well.
@@ -177,8 +180,6 @@ class ZoneList final : public ZoneObject {
 
   // Resize the list.
   void Resize(int new_capacity, Zone* zone);
-
-  DISALLOW_COPY_AND_ASSIGN(ZoneList);
 };
 
 }  // namespace internal