Move browsing_data_helper files into a separate directory.

chrome/browser/browsing_data_indexed_db_helper.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 CHROME_BROWSER_BROWSING_DATA_INDEXED_DB_HELPER_H_
-#define CHROME_BROWSER_BROWSING_DATA_INDEXED_DB_HELPER_H_
-
-#include <list>
-#include <set>
-#include <string>
-
-#include "base/callback.h"
-#include "base/compiler_specific.h"
-#include "base/file_path.h"
-#include "base/memory/ref_counted.h"
-#include "base/synchronization/lock.h"
-#include "base/time.h"
-#include "googleurl/src/gurl.h"
-
-class Profile;
-
-// BrowsingDataIndexedDBHelper is an interface for classes dealing with
-// aggregating and deleting browsing data stored in indexed databases.  A
-// client of this class need to call StartFetching from the UI thread to
-// initiate the flow, and it'll be notified by the callback in its UI thread at
-// some later point.
-class BrowsingDataIndexedDBHelper
-    : public base::RefCountedThreadSafe<BrowsingDataIndexedDBHelper> {
- public:
-  // Contains detailed information about an indexed database.
-  struct IndexedDBInfo {
-    IndexedDBInfo(
-        const GURL& origin,
-        int64 size,
-        base::Time last_modified);
-    ~IndexedDBInfo();
-
-    GURL origin;
-    int64 size;
-    base::Time last_modified;
-  };
-
-  // Create a BrowsingDataIndexedDBHelper instance for the indexed databases
-  // stored in |profile|'s user data directory.
-  static BrowsingDataIndexedDBHelper* Create(Profile* profile);
-
-  // Starts the fetching process, which will notify its completion via
-  // callback.
-  // This must be called only in the UI thread.
-  virtual void StartFetching(
-      const base::Callback<void(const std::list<IndexedDBInfo>&)>&
-          callback) = 0;
-  // Requests a single indexed database to be deleted in the WEBKIT thread.
-  virtual void DeleteIndexedDB(const GURL& origin) = 0;
-
- protected:
-  friend class base::RefCountedThreadSafe<BrowsingDataIndexedDBHelper>;
-  virtual ~BrowsingDataIndexedDBHelper() {}
-};
-
-// This class is an implementation of BrowsingDataIndexedDBHelper that does
-// not fetch its information from the indexed database tracker, but gets them
-// passed as a parameter.
-class CannedBrowsingDataIndexedDBHelper
-    : public BrowsingDataIndexedDBHelper {
- public:
-  // Contains information about an indexed database.
-  struct PendingIndexedDBInfo {
-    PendingIndexedDBInfo(const GURL& origin, const string16& name);
-    ~PendingIndexedDBInfo();
-
-    bool operator<(const PendingIndexedDBInfo& other) const;
-
-    GURL origin;
-    string16 name;
-  };
-
-  CannedBrowsingDataIndexedDBHelper();
-
-  // Return a copy of the IndexedDB helper. Only one consumer can use the
-  // StartFetching method at a time, so we need to create a copy of the helper
-  // every time we instantiate a cookies tree model for it.
-  CannedBrowsingDataIndexedDBHelper* Clone();
-
-  // Add a indexed database to the set of canned indexed databases that is
-  // returned by this helper.
-  void AddIndexedDB(const GURL& origin,
-                    const string16& name);
-
-  // Clear the list of canned indexed databases.
-  void Reset();
-
-  // True if no indexed databases are currently stored.
-  bool empty() const;
-
-  // Returns the number of currently stored indexed databases.
-  size_t GetIndexedDBCount() const;
-
-  // Returns the current list of indexed data bases.
-  const std::set<CannedBrowsingDataIndexedDBHelper::PendingIndexedDBInfo>&
-      GetIndexedDBInfo() const;
-
-  // BrowsingDataIndexedDBHelper methods.
-  virtual void StartFetching(
-      const base::Callback<void(const std::list<IndexedDBInfo>&)>&
-          callback) OVERRIDE;
-
-  virtual void DeleteIndexedDB(const GURL& origin) OVERRIDE {}
-
- private:
-  virtual ~CannedBrowsingDataIndexedDBHelper();
-
-  // Convert the pending indexed db info to indexed db info objects.
-  void ConvertPendingInfoInWebKitThread();
-
-  void NotifyInUIThread();
-
-  // Lock to protect access to pending_indexed_db_info_;
-  mutable base::Lock lock_;
-
-  // Access to |pending_indexed_db_info_| is protected by |lock_| since it can
-  // be accessed on the UI and on the WEBKIT thread.
-  std::set<PendingIndexedDBInfo> pending_indexed_db_info_;
-
-  // Access to |indexed_db_info_| is triggered indirectly via the UI thread and
-  // guarded by |is_fetching_|. This means |indexed_db_info_| is only accessed
-  // while |is_fetching_| is true. The flag |is_fetching_| is only accessed on
-  // the UI thread.
-  // In the context of this class |indexed_db_info_| is only accessed on the UI
-  // thread.
-  std::list<IndexedDBInfo> indexed_db_info_;
-
-  // This only mutates on the UI thread.
-  base::Callback<void(const std::list<IndexedDBInfo>&)> completion_callback_;
-
-  // Indicates whether or not we're currently fetching information:
-  // it's true when StartFetching() is called in the UI thread, and it's reset
-  // after we notified the callback in the UI thread.
-  // This only mutates on the UI thread.
-  bool is_fetching_;
-
-  DISALLOW_COPY_AND_ASSIGN(CannedBrowsingDataIndexedDBHelper);
-};
-
-#endif  // CHROME_BROWSER_BROWSING_DATA_INDEXED_DB_HELPER_H_