Download Service : Added leveldb proto layer

components/download/internal/test/test_store.h

Index: components/download/internal/test/test_store.h
diff --git a/components/download/internal/test/test_store.h b/components/download/internal/test/test_store.h
index e64d8ba8355672ec7f6c9bb4e1c61d12c7fa163a..7951ded535e528080d8a4b4890b6a89c16d57f14 100644
--- a/components/download/internal/test/test_store.h
+++ b/components/download/internal/test/test_store.h
@@ -8,6 +8,7 @@
 #include <string>
 #include <vector>
 
+#include "base/callback.h"
 #include "base/macros.h"
 #include "components/download/internal/store.h"
 
@@ -24,10 +25,10 @@ class TestStore : public Store {
 
   // Store implementation.
   bool IsInitialized() override;
-  void Initialize(InitCallback callback) override;
-  void Destroy(StoreCallback callback) override;
-  void Update(const Entry& entry, StoreCallback callback) override;
-  void Remove(const std::string& guid, StoreCallback callback) override;
+  void Initialize(const InitCallback& callback) override;
+  void Destroy(const StoreCallback& callback) override;
+  void Update(const Entry& entry, const StoreCallback& callback) override;
+  void Remove(const std::string& guid, const StoreCallback& callback) override;
 
   // Callback trigger methods.
   void TriggerInit(bool success, std::unique_ptr<std::vector<Entry>> entries);