diff -r 000000000000 -r 6474c204b198 dom/indexedDB/IndexedDatabaseManager.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/indexedDB/IndexedDatabaseManager.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,174 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_dom_indexeddb_indexeddatabasemanager_h__
+#define mozilla_dom_indexeddb_indexeddatabasemanager_h__
+
+#include "mozilla/dom/indexedDB/IndexedDatabase.h"
+
+#include "nsIIndexedDatabaseManager.h"
+#include "nsIObserver.h"
+
+#include "js/TypeDecls.h"
+#include "mozilla/Atomics.h"
+#include "mozilla/dom/quota/PersistenceType.h"
+#include "mozilla/Mutex.h"
+#include "nsClassHashtable.h"
+#include "nsHashKeys.h"
+
+#define INDEXEDDB_MANAGER_CONTRACTID "@mozilla.org/dom/indexeddb/manager;1"
+
+class nsPIDOMWindow;
+
+namespace mozilla {
+class EventChainPostVisitor;
+namespace dom {
+class TabContext;
+namespace quota {
+class OriginOrPatternString;
+}
+}
+}
+
+BEGIN_INDEXEDDB_NAMESPACE
+
+class FileManager;
+class FileManagerInfo;
+
+class IndexedDatabaseManager MOZ_FINAL : public nsIIndexedDatabaseManager,
+                                         public nsIObserver
+{
+  typedef mozilla::dom::quota::OriginOrPatternString OriginOrPatternString;
+  typedef mozilla::dom::quota::PersistenceType PersistenceType;
+
+public:
+  NS_DECL_ISUPPORTS
+  NS_DECL_NSIINDEXEDDATABASEMANAGER
+  NS_DECL_NSIOBSERVER
+
+  // Returns a non-owning reference.
+  static IndexedDatabaseManager*
+  GetOrCreate();
+
+  // Returns a non-owning reference.
+  static IndexedDatabaseManager*
+  Get();
+
+  // Returns an owning reference! No one should call this but the factory.
+  static IndexedDatabaseManager*
+  FactoryCreate();
+
+  static bool
+  IsClosed();
+
+  static bool
+  IsMainProcess()
+#ifdef DEBUG
+  ;
+#else
+  {
+    return sIsMainProcess;
+  }
+#endif
+
+  static bool
+  InLowDiskSpaceMode()
+#ifdef DEBUG
+  ;
+#else
+  {
+    return !!sLowDiskSpaceMode;
+  }
+#endif
+
+  already_AddRefed<FileManager>
+  GetFileManager(PersistenceType aPersistenceType,
+                 const nsACString& aOrigin,
+                 const nsAString& aDatabaseName);
+
+  void
+  AddFileManager(FileManager* aFileManager);
+
+  void
+  InvalidateAllFileManagers();
+
+  void
+  InvalidateFileManagers(PersistenceType aPersistenceType,
+                         const OriginOrPatternString& aOriginOrPattern);
+
+  void
+  InvalidateFileManager(PersistenceType aPersistenceType,
+                        const nsACString& aOrigin,
+                        const nsAString& aDatabaseName);
+
+  nsresult
+  AsyncDeleteFile(FileManager* aFileManager,
+                  int64_t aFileId);
+
+  // Don't call this method in real code, it blocks the main thread!
+  // It is intended to be used by mochitests to test correctness of the special
+  // reference counting of stored blobs/files.
+  nsresult
+  BlockAndGetFileReferences(PersistenceType aPersistenceType,
+                            const nsACString& aOrigin,
+                            const nsAString& aDatabaseName,
+                            int64_t aFileId,
+                            int32_t* aRefCnt,
+                            int32_t* aDBRefCnt,
+                            int32_t* aSliceRefCnt,
+                            bool* aResult);
+
+  static mozilla::Mutex&
+  FileMutex()
+  {
+    IndexedDatabaseManager* mgr = Get();
+    NS_ASSERTION(mgr, "Must have a manager here!");
+
+    return mgr->mFileMutex;
+  }
+
+  static nsresult
+  FireWindowOnError(nsPIDOMWindow* aOwner,
+                    EventChainPostVisitor& aVisitor);
+
+  static bool
+  TabContextMayAccessOrigin(const mozilla::dom::TabContext& aContext,
+                            const nsACString& aOrigin);
+
+  static bool
+  DefineIndexedDB(JSContext* aCx, JS::Handle<JSObject*> aGlobal);
+
+private:
+  IndexedDatabaseManager();
+  ~IndexedDatabaseManager();
+
+  nsresult
+  Init();
+
+  void
+  Destroy();
+
+  static PLDHashOperator
+  InvalidateAndRemoveFileManagers(const nsACString& aKey,
+                                  nsAutoPtr<FileManagerInfo>& aValue,
+                                  void* aUserArg);
+
+  // Maintains a list of all file managers per origin. This list isn't
+  // protected by any mutex but it is only ever touched on the IO thread.
+  nsClassHashtable<nsCStringHashKey, FileManagerInfo> mFileManagerInfos;
+
+  // Lock protecting FileManager.mFileInfos and nsDOMFileBase.mFileInfos
+  // It's s also used to atomically update FileInfo.mRefCnt, FileInfo.mDBRefCnt
+  // and FileInfo.mSliceRefCnt
+  mozilla::Mutex mFileMutex;
+
+  static bool sIsMainProcess;
+  static mozilla::Atomic<bool> sLowDiskSpaceMode;
+};
+
+END_INDEXEDDB_NAMESPACE
+
+#endif /* mozilla_dom_indexeddb_indexeddatabasemanager_h__ */