mojo leveldb: Get profile and leveldb connected to DOMStorageContext.

components/leveldb/leveldb_service_impl.h

Index: components/leveldb/leveldb_service_impl.h
diff --git a/components/leveldb/leveldb_service_impl.h b/components/leveldb/leveldb_service_impl.h
index 54b2942eba24fcf5a2d1d6a3c39529d4ac165a8a..85f2ff4769bf9f03dbba8ea367411e69b1dee6ec 100644
--- a/components/leveldb/leveldb_service_impl.h
+++ b/components/leveldb/leveldb_service_impl.h
@@ -9,12 +9,16 @@
 #include "components/leveldb/leveldb_file_thread.h"
 #include "components/leveldb/public/interfaces/leveldb.mojom.h"
 
+namespace mojo {
+class MessageLoopRef;
+}
+
 namespace leveldb {
 
 // Creates LevelDBDatabases based scoped to a |directory|/|dbname|.
 class LevelDBServiceImpl : public LevelDBService {
  public:
-  LevelDBServiceImpl();
+  explicit LevelDBServiceImpl(scoped_ptr<mojo::MessageLoopRef> ref);
   ~LevelDBServiceImpl() override;
 
   // Overridden from LevelDBService:
@@ -24,6 +28,9 @@ class LevelDBServiceImpl : public LevelDBService {
             const OpenCallback& callback) override;
 
  private:
+  // Causes our application to quit when we go out of scope.
+  scoped_ptr<mojo::MessageLoopRef> message_loop_ref_;
+
   // Thread to own the mojo message pipe. Because leveldb spawns multiple
   // threads that want to call file stuff, we create a dedicated thread to send
   // and receive mojo message calls.