mojo leveldb: Get profile and leveldb connected to DOMStorageContext.

components/profile_service/profile_app.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/profile_service/profile_app.h"
 
 #include "base/lazy_instance.h"
 #include "components/leveldb/leveldb_service_impl.h"
+#include "components/profile_service/leveldb_thread.h"
 #include "components/profile_service/profile_service_impl.h"
 #include "mojo/shell/public/cpp/connection.h"
 
 namespace profile {
 
 namespace {
 
 base::LazyInstance<std::map<std::string, base::FilePath>>
     g_user_id_to_data_dir = LAZY_INSTANCE_INITIALIZER;
 
@@ skipping 13 matching lines @@
 void ProfileApp::AssociateMojoUserIDWithProfileDir(
     const std::string& user_id,
     const base::FilePath& profile_data_dir) {
   g_user_id_to_data_dir.Get()[user_id] = profile_data_dir;
 }
 
 void ProfileApp::Initialize(mojo::Connector* connector,
                             const mojo::Identity& identity,
                             uint32_t id) {
   tracing_.Initialize(connector, identity.name());
-  leveldb_service_.reset(new leveldb::LevelDBServiceImpl);
 
   auto it = g_user_id_to_data_dir.Get().find(identity.user_id());
   DCHECK(it != g_user_id_to_data_dir.Get().end());
   profile_data_dir_ = it->second;
 }
 
 bool ProfileApp::AcceptConnection(mojo::Connection* connection) {
   connection->AddInterface<leveldb::LevelDBService>(this);
   connection->AddInterface<ProfileService>(this);
   return true;
 }
 
 void ProfileApp::Create(mojo::Connection* connection,
                         ProfileServiceRequest request) {
   // No, we need one of these per connection.
   new ProfileServiceImpl(connection,
                          std::move(request),
+                         ref_factory_.CreateRef(),
                          profile_data_dir_,
                          lock_table_.get());
 }
 
 void ProfileApp::Create(mojo::Connection* connection,
                         leveldb::LevelDBServiceRequest request) {
-  leveldb_bindings_.AddBinding(leveldb_service_.get(), std::move(request));
+  if (!leveldb_thread_) {
+    leveldb_thread_ = new LevelDBThread(
+        ref_factory_.CreateRef(),
+        std::move(request));
+  } else {
+    // We need to pass this binding to the leveldb thread.
+    leveldb_thread_->BindNewRequest(std::move(request));
+  }
 }
 
 }  // namespace profile