Let IndexedDBContextImpl create its own task runner

content/browser/indexed_db/indexed_db_context_impl.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CONTEXT_IMPL_H_
 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CONTEXT_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 43 matching lines @@
     FORCE_CLOSE_COPY_ORIGIN,
     FORCE_CLOSE_REASON_MAX
   };
 
   // The indexed db directory.
   static const base::FilePath::CharType kIndexedDBDirectory[];
 
   // If |data_path| is empty, nothing will be saved to disk.
   IndexedDBContextImpl(const base::FilePath& data_path,
                        storage::SpecialStoragePolicy* special_storage_policy,
-                       storage::QuotaManagerProxy* quota_manager_proxy,
-                       scoped_refptr<base::SequencedTaskRunner> task_runner);
+                       storage::QuotaManagerProxy* quota_manager_proxy);
 
   IndexedDBFactory* GetIDBFactory();
 
   // Disables the exit-time deletion of session-only data.
   void SetForceKeepSessionState() { force_keep_session_state_ = true; }
 
   // IndexedDBContext implementation:
   base::SequencedTaskRunner* TaskRunner() const override;
   std::vector<IndexedDBInfo> GetAllOriginsInfo() override;
   int64_t GetOriginDiskUsage(const GURL& origin_url) override;
   void DeleteForOrigin(const GURL& origin_url) override;
   void CopyOriginData(const GURL& origin_url,
                       IndexedDBContext* dest_context) override;
   base::FilePath GetFilePathForTesting(const GURL& origin_url) const override;
-  void SetTaskRunnerForTesting(base::SequencedTaskRunner* task_runner) override;
+  void SetTaskRunnerForTesting(
+      const scoped_refptr<base::SequencedTaskRunner>& task_runner) override;

[gab, 2017/06/13 15:31:23]

ditto (prefer by value)

 
   // TODO(jsbell): Replace IndexedDBContext members with these.
   int64_t GetOriginDiskUsage(const url::Origin& origin);
   void DeleteForOrigin(const url::Origin& origin);
   void CopyOriginData(const url::Origin& origin,
                       IndexedDBContext* dest_context);
   base::FilePath GetFilePathForTesting(const url::Origin& origin) const;
 
   // Methods called by IndexedDBDispatcherHost for quota support.
   void ConnectionOpened(const url::Origin& origin, IndexedDBConnection* db);
@@ skipping 74 matching lines @@
   scoped_refptr<base::SequencedTaskRunner> task_runner_;
   std::unique_ptr<std::set<url::Origin>> origin_set_;
   std::map<url::Origin, int64_t> origin_size_map_;
 
   DISALLOW_COPY_AND_ASSIGN(IndexedDBContextImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CONTEXT_IMPL_H_