diff --git a/internal/data/BUILD b/internal/data/BUILD
index b03e493e..0e019972 100644
--- a/internal/data/BUILD
+++ b/internal/data/BUILD
@@ -28,6 +28,7 @@ cc_library(
         "leveldb_data_set.h",
     ],
     deps = [
+        "//internal/base:file_path",
         "//internal/platform:types",
         "//third_party/leveldb:db",
         "//third_party/leveldb:table",
diff --git a/internal/data/leveldb_data_set.h b/internal/data/leveldb_data_set.h
index 4be5a217..a341acfd 100644
--- a/internal/data/leveldb_data_set.h
+++ b/internal/data/leveldb_data_set.h
@@ -28,6 +28,7 @@
 #include "third_party/leveldb/include/options.h"
 #include "third_party/leveldb/include/slice.h"
 #include "third_party/leveldb/include/status.h"
+#include "internal/base/file_path.h"
 #include "internal/data/data_set.h"
 #if defined(_WIN32)
 #include "location/nearby/apps/better_together/windows/common/leveldb_env_windows.h"
@@ -46,7 +47,13 @@ class LeveldbDataSet : public DataSet<T> {
  public:
   using KeyEntryVector = std::vector<std::pair<std::string, T>>;
 
-  explicit LeveldbDataSet(absl::string_view path) : path_(path) {}
+  explicit LeveldbDataSet(const FilePath& db_dir) : path_(db_dir.ToString()) {
+#if defined(_WIN32)
+    // In Windows use the Unicode compatible environment.
+    db_options_.env = nearby::windows::WindowsEnv::Default();
+#endif  // defined(_WIN32)
+    db_options_.create_if_missing = true;
+  }
   ~LeveldbDataSet() override = default;
 
   void Initialize(absl::AnyInvocable<void(InitStatus) &&> callback) override;
@@ -72,6 +79,7 @@ class LeveldbDataSet : public DataSet<T> {
 
  private:
   std::string path_;
+  leveldb::Options db_options_;
   std::unique_ptr<leveldb::DB> db_ = nullptr;
   InitStatus status_ = InitStatus::kNotInitialized;
 };
@@ -81,13 +89,8 @@ template <typename T,
               isMessageLite>
 void LeveldbDataSet<T, isMessageLite>::Initialize(
     absl::AnyInvocable<void(InitStatus) &&> callback) {
-  leveldb::Options options;
-  options.create_if_missing = true;
-#if defined(_WIN32)
-  options.env = nearby::windows::WindowsEnv::Default();
-#endif  // defined(_WIN32)
   leveldb::DB* db;
-  leveldb::Status status = leveldb::DB::Open(options, path_, &db);
+  leveldb::Status status = leveldb::DB::Open(db_options_, path_, &db);
   db_ = std::unique_ptr<leveldb::DB>(db);
 
   if (status.ok()) {
@@ -226,11 +229,7 @@ void LeveldbDataSet<T, isMessageLite>::Destroy(
     absl::AnyInvocable<void(bool) &&> callback) {
   LOG(INFO) << "Destroy is called.";
   db_.reset();
-  leveldb::Options options;
-#if defined(_WIN32)
-  options.env = nearby::windows::WindowsEnv::Default();
-#endif  // defined(_WIN32)
-  leveldb::DestroyDB(path_, options);
+  leveldb::DestroyDB(path_, db_options_);
   std::move(callback)(true);
 }
 
diff --git a/internal/data/leveldb_data_set_test.cc b/internal/data/leveldb_data_set_test.cc
index b469f019..928ed60b 100644
--- a/internal/data/leveldb_data_set_test.cc
+++ b/internal/data/leveldb_data_set_test.cc
@@ -57,7 +57,7 @@ FilePath GenerateLeveldbPath() {
 template <typename T>
 std::unique_ptr<LeveldbDataSet<T>> CreateDataSet(
     const FilePath& path) {
-  return std::make_unique<LeveldbDataSet<T>>(path.ToString());
+  return std::make_unique<LeveldbDataSet<T>>(path);
 }
 
 template <typename T>
diff --git a/sharing/certificates/BUILD b/sharing/certificates/BUILD
index 33443108..289e8b8b 100644
--- a/sharing/certificates/BUILD
+++ b/sharing/certificates/BUILD
@@ -40,6 +40,7 @@ cc_library(
     visibility = ["//visibility:public"],
     deps = [
         "//internal/base",
+        "//internal/base:file_path",
         "//internal/crypto_cros",
         "//internal/flags:nearby_flags",
         "//internal/platform:types",
@@ -92,6 +93,7 @@ cc_library(
     deps = [
         ":certificates",
         "//internal/base:bluetooth_address",
+        "//internal/base:file_path",
         "//internal/crypto_cros",
         "//sharing/common:enum",
         "//sharing/contacts",
diff --git a/sharing/certificates/fake_nearby_share_certificate_manager.cc b/sharing/certificates/fake_nearby_share_certificate_manager.cc
index 43f8c4f1..71bd6e89 100644
--- a/sharing/certificates/fake_nearby_share_certificate_manager.cc
+++ b/sharing/certificates/fake_nearby_share_certificate_manager.cc
@@ -23,7 +23,7 @@
 #include <utility>
 #include <vector>
 
-#include "absl/strings/string_view.h"
+#include "internal/base/file_path.h"
 #include "sharing/certificates/nearby_share_certificate_manager.h"
 #include "sharing/certificates/nearby_share_encrypted_metadata_key.h"
 #include "sharing/certificates/nearby_share_private_certificate.h"
@@ -50,7 +50,7 @@ std::unique_ptr<NearbyShareCertificateManager>
 FakeNearbyShareCertificateManager::Factory::CreateInstance(
     nearby::Context* context,
     NearbyShareLocalDeviceDataManager* local_device_data_manager,
-    NearbyShareContactManager* contact_manager, absl::string_view profile_path,
+    NearbyShareContactManager* contact_manager, const FilePath& profile_path,
     nearby::sharing::api::SharingRpcClientFactory* client_factory) {
   auto instance = std::make_unique<FakeNearbyShareCertificateManager>();
   instances_.push_back(instance.get());
diff --git a/sharing/certificates/fake_nearby_share_certificate_manager.h b/sharing/certificates/fake_nearby_share_certificate_manager.h
index 67f77e21..c58d36ba 100644
--- a/sharing/certificates/fake_nearby_share_certificate_manager.h
+++ b/sharing/certificates/fake_nearby_share_certificate_manager.h
@@ -24,7 +24,7 @@
 #include <string>
 #include <vector>
 
-#include "absl/strings/string_view.h"
+#include "internal/base/file_path.h"
 #include "sharing/certificates/nearby_share_certificate_manager.h"
 #include "sharing/certificates/nearby_share_certificate_manager_impl.h"
 #include "sharing/certificates/nearby_share_encrypted_metadata_key.h"
@@ -62,7 +62,7 @@ class FakeNearbyShareCertificateManager : public NearbyShareCertificateManager {
         Context* context,
         NearbyShareLocalDeviceDataManager* local_device_data_manager,
         NearbyShareContactManager* contact_manager,
-        absl::string_view profile_path,
+        const FilePath& profile_path,
         nearby::sharing::api::SharingRpcClientFactory* client_factory) override;
 
     std::vector<FakeNearbyShareCertificateManager*> instances_;
diff --git a/sharing/certificates/nearby_share_certificate_manager_impl.cc b/sharing/certificates/nearby_share_certificate_manager_impl.cc
index 32100a2f..efd38e68 100644
--- a/sharing/certificates/nearby_share_certificate_manager_impl.cc
+++ b/sharing/certificates/nearby_share_certificate_manager_impl.cc
@@ -38,6 +38,7 @@
 #include "absl/synchronization/notification.h"
 #include "absl/time/time.h"
 #include "absl/types/span.h"
+#include "internal/base/file_path.h"
 #include "internal/platform/implementation/account_manager.h"
 #include "proto/identity/v1/resources.pb.h"
 #include "proto/identity/v1/rpcs.pb.h"
@@ -186,7 +187,7 @@ std::unique_ptr<NearbyShareCertificateManager>
 NearbyShareCertificateManagerImpl::Factory::Create(
     Context* context, SharingPlatform& sharing_platform,
     NearbyShareLocalDeviceDataManager* local_device_data_manager,
-    NearbyShareContactManager* contact_manager, absl::string_view profile_path,
+    NearbyShareContactManager* contact_manager, const FilePath& profile_path,
     nearby::sharing::api::SharingRpcClientFactory* client_factory) {
   DCHECK(context);
 
@@ -196,11 +197,12 @@ NearbyShareCertificateManagerImpl::Factory::Create(
                                          client_factory);
   }
 
+  FilePath database_path = profile_path;
+  database_path.append(FilePath(kPublicCertificateDatabaseName));
   return absl::WrapUnique(new NearbyShareCertificateManagerImpl(
       context, sharing_platform.GetPreferenceManager(),
       sharing_platform.GetAccountManager(),
-      sharing_platform.CreatePublicCertificateDatabase(
-          absl::StrCat(profile_path, "/", kPublicCertificateDatabaseName)),
+      sharing_platform.CreatePublicCertificateDatabase(database_path),
       local_device_data_manager, contact_manager, client_factory));
 }
 
diff --git a/sharing/certificates/nearby_share_certificate_manager_impl.h b/sharing/certificates/nearby_share_certificate_manager_impl.h
index bcf1d52a..cd3072aa 100644
--- a/sharing/certificates/nearby_share_certificate_manager_impl.h
+++ b/sharing/certificates/nearby_share_certificate_manager_impl.h
@@ -24,8 +24,8 @@
 #include <vector>
 
 #include "absl/functional/any_invocable.h"
-#include "absl/strings/string_view.h"
 #include "absl/time/time.h"
+#include "internal/base/file_path.h"
 #include "internal/platform/implementation/account_manager.h"
 #include "internal/platform/task_runner.h"
 #include "sharing/certificates/nearby_share_certificate_manager.h"
@@ -68,7 +68,7 @@ class NearbyShareCertificateManagerImpl
         nearby::sharing::api::SharingPlatform& sharing_platform,
         NearbyShareLocalDeviceDataManager* local_device_data_manager,
         NearbyShareContactManager* contact_manager,
-        absl::string_view profile_path,
+        const FilePath& profile_path,
         nearby::sharing::api::SharingRpcClientFactory* client_factory);
     static void SetFactoryForTesting(Factory* test_factory);
 
@@ -78,7 +78,7 @@ class NearbyShareCertificateManagerImpl
         Context* context,
         NearbyShareLocalDeviceDataManager* local_device_data_manager,
         NearbyShareContactManager* contact_manager,
-        absl::string_view profile_path,
+        const FilePath& profile_path,
         nearby::sharing::api::SharingRpcClientFactory* client_factory) = 0;
 
    private:
diff --git a/sharing/certificates/nearby_share_certificate_manager_impl_test.cc b/sharing/certificates/nearby_share_certificate_manager_impl_test.cc
index a932eb46..7e0ed856 100644
--- a/sharing/certificates/nearby_share_certificate_manager_impl_test.cc
+++ b/sharing/certificates/nearby_share_certificate_manager_impl_test.cc
@@ -147,8 +147,8 @@ class NearbyShareCertificateManagerImplTest
     local_device_data_manager_->SetUsingIdentityRpc(use_identity_rpc);
     cert_manager_ = NearbyShareCertificateManagerImpl::Factory::Create(
         &fake_context_, mock_sharing_platform_,
-        local_device_data_manager_.get(), contact_manager_.get(), std::string(),
-        &client_factory_);
+        local_device_data_manager_.get(), contact_manager_.get(),
+        /*profile_path=*/{}, &client_factory_);
     cert_manager_->AddObserver(this);
 
     cert_store_ = cert_store_factory_.instances().back();
diff --git a/sharing/internal/api/mock_sharing_platform.h b/sharing/internal/api/mock_sharing_platform.h
index 317dd753..d18ad76a 100644
--- a/sharing/internal/api/mock_sharing_platform.h
+++ b/sharing/internal/api/mock_sharing_platform.h
@@ -87,8 +87,8 @@ class MockSharingPlatform : public SharingPlatform {
   MOCK_METHOD(TaskRunner&, GetDefaultTaskRunner, (), (override));
   MOCK_METHOD(nearby::DeviceInfo&, GetDeviceInfo, (), (override));
   MOCK_METHOD(std::unique_ptr<PublicCertificateDatabase>,
-              CreatePublicCertificateDatabase,
-              (absl::string_view database_path), (override));
+              CreatePublicCertificateDatabase, (const FilePath& database_path),
+              (override));
   MOCK_METHOD(
       std::unique_ptr<SharingRpcClientFactory>, CreateSharingRpcClientFactory,
       (Clock * clock,
diff --git a/sharing/internal/api/sharing_platform.h b/sharing/internal/api/sharing_platform.h
index bef2d08a..924870b8 100644
--- a/sharing/internal/api/sharing_platform.h
+++ b/sharing/internal/api/sharing_platform.h
@@ -82,7 +82,7 @@ class SharingPlatform {
   virtual TaskRunner& GetDefaultTaskRunner() = 0;
   virtual nearby::DeviceInfo& GetDeviceInfo() = 0;
   virtual std::unique_ptr<PublicCertificateDatabase>
-  CreatePublicCertificateDatabase(absl::string_view database_path) = 0;
+  CreatePublicCertificateDatabase(const FilePath& database_path) = 0;
 
   virtual std::unique_ptr<SharingRpcClientFactory>
   CreateSharingRpcClientFactory(
diff --git a/sharing/nearby_sharing_service_impl.cc b/sharing/nearby_sharing_service_impl.cc
index 137d5fde..7537cfd1 100644
--- a/sharing/nearby_sharing_service_impl.cc
+++ b/sharing/nearby_sharing_service_impl.cc
@@ -246,13 +246,12 @@ NearbySharingServiceImpl::NearbySharingServiceImpl(
   CHECK(analytics_recorder);
 
   is_shutting_down_ = std::make_unique<bool>(false);
-  FilePath full_database_path =
+  FilePath profile_path =
       device_info_.GetAppDataPath().append(FilePath(kProfileRelativePath));
 
   certificate_manager_ = NearbyShareCertificateManagerImpl::Factory::Create(
       context_, sharing_platform, local_device_data_manager_.get(),
-      contact_manager_.get(), full_database_path.ToString(),
-      nearby_share_client_factory_.get()),
+      contact_manager_.get(), profile_path, nearby_share_client_factory_.get()),
 
   certificate_manager_->AddObserver(this);
   context_->GetConnectivityManager()->RegisterConnectionListener(