FileAPI: Add Initialize() function to FileSystemBackend

webkit/browser/fileapi/file_system_backend.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 WEBKIT_BROWSER_FILEAPI_FILE_SYSTEM_BACKEND_H_
 #define WEBKIT_BROWSER_FILEAPI_FILE_SYSTEM_BACKEND_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 28 matching lines @@
 //
 // NOTE: when you implement a new FileSystemBackend for your own
 // FileSystem module, please contact to kinuko@chromium.org.
 //
 class WEBKIT_STORAGE_BROWSER_EXPORT FileSystemBackend {
  public:
   // Callback for InitializeFileSystem.
   typedef base::Callback<void(const GURL& root_url,
                               const std::string& name,
                               base::PlatformFileError error)>
-      InitializeFileSystemCallback;
+      OpenFileSystemCallback;
   virtual ~FileSystemBackend() {}
 
   // Returns true if this mount point provider can handle |type|.
   // One mount point provider may be able to handle multiple filesystem types.
   virtual bool CanHandleType(FileSystemType type) const = 0;
 
-  // Initializes the filesystem for the given |origin_url| and |type|.
+  // This method is called right after the backend is registered in the
+  // FileSystemContext and before any other methods are called. Each backend can
+  // do additional initialization which depends on FileSystemContext here.
+  virtual void Initialize(FileSystemContext* context) = 0;
+
+  // Opens the filesystem for the given |origin_url| and |type|.
   // This verifies if it is allowed to request (or create) the filesystem
   // and if it can access (or create) the root directory of the mount point.
   // If |mode| is CREATE_IF_NONEXISTENT calling this may also create
   // the root directory (and/or related database entries etc) for
   // the filesystem if it doesn't exist.
-  virtual void InitializeFileSystem(
+  virtual void OpenFileSystem(
       const GURL& origin_url,
       FileSystemType type,
       OpenFileSystemMode mode,
-      FileSystemContext* context,
-      const InitializeFileSystemCallback& callback) = 0;
+      const OpenFileSystemCallback& callback) = 0;
 
   // Returns the specialized FileSystemFileUtil for this mount point.
   // It is ok to return NULL if the filesystem doesn't support synchronous
   // version of FileUtil.
   virtual FileSystemFileUtil* GetFileUtil(FileSystemType type) = 0;
 
   // Returns the specialized AsyncFileUtil for this mount point.
   virtual AsyncFileUtil* GetAsyncFileUtil(FileSystemType type) = 0;
 
   // Returns the specialized CopyOrMoveFileValidatorFactory for this mount
@@ skipping 65 matching lines @@
         const std::string& extension_id) = 0;
   // Gets virtual path by known filesystem path. Returns false when filesystem
   // path is not exposed by this provider.
   virtual bool GetVirtualPath(const base::FilePath& file_system_path,
                               base::FilePath* virtual_path) = 0;
 };
 
 }  // namespace fileapi
 
 #endif  // WEBKIT_BROWSER_FILEAPI_FILE_SYSTEM_BACKEND_H_