Migrates legacy packaged app data when it's upgraded to a platform app

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 <map>
 #include <set>
 #include <string>
@@ skipping 27 matching lines @@
 class IndexedDBConnection;
 
 class CONTENT_EXPORT IndexedDBContextImpl
     : NON_EXPORTED_BASE(public IndexedDBContext) {
  public:
   // Recorded in histograms, so append only.
   enum ForceCloseReason {
     FORCE_CLOSE_DELETE_ORIGIN = 0,
     FORCE_CLOSE_BACKING_STORE_FAILURE,
     FORCE_CLOSE_INTERNALS_PAGE,
+    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,
                        base::SequencedTaskRunner* task_runner);
 
   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 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 std::string& origin_id) const override;
   void SetTaskRunnerForTesting(base::SequencedTaskRunner* task_runner) override;
 
   // Methods called by IndexedDBDispatcherHost for quota support.
   void ConnectionOpened(const GURL& origin_url, IndexedDBConnection* db);
   void ConnectionClosed(const GURL& origin_url, IndexedDBConnection* db);
   void TransactionComplete(const GURL& origin_url);
   void DatabaseDeleted(const GURL& origin_url);
   bool WouldBeOverQuota(const GURL& origin_url, int64 additional_bytes);
   bool IsOverQuota(const GURL& origin_url);
 
   storage::QuotaManagerProxy* quota_manager_proxy();
 
   std::vector<GURL> GetAllOrigins();
   base::Time GetOriginLastModified(const GURL& origin_url);
   base::ListValue* GetAllOriginsDetails();
 
   // ForceClose takes a value rather than a reference since it may release the
   // owning object.
   void ForceClose(const GURL origin_url, ForceCloseReason reason);
   // GetStoragePaths returns all paths owned by this database, in arbitrary
   // order.
   std::vector<base::FilePath> GetStoragePaths(const GURL& origin_url) const;
+
   base::FilePath data_path() const { return data_path_; }
   bool IsInOriginSet(const GURL& origin_url) {
     std::set<GURL>* set = GetOriginSet();
     return set->find(origin_url) != set->end();
   }
   size_t GetConnectionCount(const GURL& origin_url);
 
   // For unit tests allow to override the |data_path_|.
   void set_data_path_for_testing(const base::FilePath& data_path) {
     data_path_ = data_path;
@@ skipping 48 matching lines @@
   scoped_ptr<std::set<GURL> > origin_set_;
   OriginToSizeMap origin_size_map_;
   OriginToSizeMap space_available_map_;
 
   DISALLOW_COPY_AND_ASSIGN(IndexedDBContextImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CONTEXT_IMPL_H_