Get rid of base::SharedMemory::NULLHandle();

components/discardable_memory/service/discardable_shared_memory_manager.cc

Index: components/discardable_memory/service/discardable_shared_memory_manager.cc
diff --git a/components/discardable_memory/service/discardable_shared_memory_manager.cc b/components/discardable_memory/service/discardable_shared_memory_manager.cc
index e2966c798c78bfafbc28f69e0d85095aa9f89582..650fc0134af4554f94d4540fb145bd0d40c74e71 100644
--- a/components/discardable_memory/service/discardable_shared_memory_manager.cc
+++ b/components/discardable_memory/service/discardable_shared_memory_manager.cc
@@ -440,7 +440,7 @@ void DiscardableSharedMemoryManager::AllocateLockedDiscardableSharedMemory(
   MemorySegmentMap& client_segments = clients_[client_id];
   if (client_segments.find(id) != client_segments.end()) {
     LOG(ERROR) << "Invalid discardable shared memory ID";
-    *shared_memory_handle = base::SharedMemory::NULLHandle();
+    *shared_memory_handle = base::SharedMemoryHandle();
     return;
   }
 
@@ -461,14 +461,14 @@ void DiscardableSharedMemoryManager::AllocateLockedDiscardableSharedMemory(
   std::unique_ptr<base::DiscardableSharedMemory> memory(
       new base::DiscardableSharedMemory);
   if (!memory->CreateAndMap(size)) {
-    *shared_memory_handle = base::SharedMemory::NULLHandle();
+    *shared_memory_handle = base::SharedMemoryHandle();
     return;
   }
 
   base::CheckedNumeric<size_t> checked_bytes_allocated = bytes_allocated_;
   checked_bytes_allocated += memory->mapped_size();
   if (!checked_bytes_allocated.IsValid()) {
-    *shared_memory_handle = base::SharedMemory::NULLHandle();
+    *shared_memory_handle = base::SharedMemoryHandle();
     return;
   }