Replace ptr.reset with std::move in src/components

components/history/core/browser/history_service.cc

Index: components/history/core/browser/history_service.cc
diff --git a/components/history/core/browser/history_service.cc b/components/history/core/browser/history_service.cc
index a97677666b691d765a49bbc921453c2bdda7d277..2ff3e2318e779a1f2985ba1f2b0309719d0a091d 100644
--- a/components/history/core/browser/history_service.cc
+++ b/components/history/core/browser/history_service.cc
@@ -968,7 +968,7 @@ void HistoryService::SetInMemoryBackend(
     std::unique_ptr<InMemoryHistoryBackend> mem_backend) {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK(!in_memory_backend_) << "Setting mem DB twice";
-  in_memory_backend_.reset(mem_backend.release());
+  in_memory_backend_ = std::move(mem_backend);
 
   // The database requires additional initialization once we own it.
   in_memory_backend_->AttachToHistoryService(this);