Make LevelDBObserver an associated interface to LevelDBWrapper.

content/browser/leveldb_wrapper_impl.cc

Index: content/browser/leveldb_wrapper_impl.cc
diff --git a/content/browser/leveldb_wrapper_impl.cc b/content/browser/leveldb_wrapper_impl.cc
index cef3f86b6d61d896b42de9d0a83bf0e7d493f1f4..05132691c7308acce338671b9d2a813ea771ff58 100644
--- a/content/browser/leveldb_wrapper_impl.cc
+++ b/content/browser/leveldb_wrapper_impl.cc
@@ -78,14 +78,17 @@ void LevelDBWrapperImpl::Bind(mojom::LevelDBWrapperRequest request) {
   bindings_.AddBinding(this, std::move(request));
 }
 
-void LevelDBWrapperImpl::AddObserver(mojom::LevelDBObserverPtr observer) {
-  observers_.AddPtr(std::move(observer));
-}
-
 void LevelDBWrapperImpl::EnableAggressiveCommitDelay() {
   s_aggressive_flushing_enabled_ = true;
 }
 
+void LevelDBWrapperImpl::AddObserver(
+    mojom::LevelDBObserverAssociatedPtrInfo observer) {
+  mojom::LevelDBObserverAssociatedPtr observer_ptr;
+  observer_ptr.Bind(std::move(observer));
+  observers_.AddPtr(std::move(observer_ptr));
+}
+
 void LevelDBWrapperImpl::Put(const std::vector<uint8_t>& key,
                              const std::vector<uint8_t>& value,
                              const std::string& source,