[fsp] [recommit #2] Add an initial AsyncFileUtil.

chrome/browser/chromeos/fileapi/file_system_backend.cc

 // Copyright 2013 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.
 
 #include "chrome/browser/chromeos/fileapi/file_system_backend.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/stringprintf.h"
@@ skipping 19 matching lines @@
 }  // namespace
 
 namespace chromeos {
 
 // static
 bool FileSystemBackend::CanHandleURL(const fileapi::FileSystemURL& url) {
   if (!url.is_valid())
     return false;
   return url.type() == fileapi::kFileSystemTypeNativeLocal ||
          url.type() == fileapi::kFileSystemTypeRestrictedNativeLocal ||
-         url.type() == fileapi::kFileSystemTypeDrive;
+         url.type() == fileapi::kFileSystemTypeDrive ||
+         url.type() == fileapi::kFileSystemTypeProvided;
 }
 
 FileSystemBackend::FileSystemBackend(
     FileSystemBackendDelegate* drive_delegate,
+    FileSystemBackendDelegate* file_system_provider_delegate,
     scoped_refptr<quota::SpecialStoragePolicy> special_storage_policy,
     scoped_refptr<fileapi::ExternalMountPoints> mount_points,
     fileapi::ExternalMountPoints* system_mount_points)
     : special_storage_policy_(special_storage_policy),
       file_access_permissions_(new FileAccessPermissions()),
       local_file_util_(fileapi::AsyncFileUtil::CreateForLocalFileSystem()),
       drive_delegate_(drive_delegate),
+      file_system_provider_delegate_(file_system_provider_delegate),

[mtomasz, 2014/04/21 01:09:35]

@kinaba: This was missing, causing a leak of the passed raw pointer.

       mount_points_(mount_points),
-      system_mount_points_(system_mount_points) {
-}
+      system_mount_points_(system_mount_points) {}
 
 FileSystemBackend::~FileSystemBackend() {
 }
 
 void FileSystemBackend::AddSystemMountPoints() {
   // RegisterFileSystem() is no-op if the mount point with the same name
   // already exists, hence it's safe to call without checking if a mount
   // point already exists or not.
   system_mount_points_->RegisterFileSystem(
       "archive",
@@ skipping 160 matching lines @@
   std::vector<base::FilePath> root_dirs;
   for (size_t i = 0; i < mount_points.size(); ++i)
     root_dirs.push_back(mount_points[i].path);
   return root_dirs;
 }
 
 fileapi::AsyncFileUtil* FileSystemBackend::GetAsyncFileUtil(
     fileapi::FileSystemType type) {
   if (type == fileapi::kFileSystemTypeDrive)
     return drive_delegate_->GetAsyncFileUtil(type);
+  if (type == fileapi::kFileSystemTypeProvided)
+    return file_system_provider_delegate_->GetAsyncFileUtil(type);
 
   DCHECK(type == fileapi::kFileSystemTypeNativeLocal ||
          type == fileapi::kFileSystemTypeRestrictedNativeLocal);
   return local_file_util_.get();
 }
 
 fileapi::CopyOrMoveFileValidatorFactory*
 FileSystemBackend::GetCopyOrMoveFileValidatorFactory(
     fileapi::FileSystemType type, base::File::Error* error_code) {
   DCHECK(error_code);
@@ skipping 34 matching lines @@
   DCHECK(url.is_valid());
 
   if (!IsAccessAllowed(url))
     return scoped_ptr<webkit_blob::FileStreamReader>();
 
   if (url.type() == fileapi::kFileSystemTypeDrive) {
     return drive_delegate_->CreateFileStreamReader(
         url, offset, expected_modification_time, context);
   }
 
+  if (url.type() == fileapi::kFileSystemTypeProvided) {
+    return file_system_provider_delegate_->CreateFileStreamReader(
+        url, offset, expected_modification_time, context);
+  }
+
   return scoped_ptr<webkit_blob::FileStreamReader>(
       webkit_blob::FileStreamReader::CreateForFileSystemFile(
           context, url, offset, expected_modification_time));
 }
 
 scoped_ptr<fileapi::FileStreamWriter>
 FileSystemBackend::CreateFileStreamWriter(
     const fileapi::FileSystemURL& url,
     int64 offset,
     fileapi::FileSystemContext* context) const {
   DCHECK(url.is_valid());
 
   if (!IsAccessAllowed(url))
     return scoped_ptr<fileapi::FileStreamWriter>();
 
   if (url.type() == fileapi::kFileSystemTypeDrive)
     return drive_delegate_->CreateFileStreamWriter(url, offset, context);
 
   if (url.type() == fileapi::kFileSystemTypeRestrictedNativeLocal)
     return scoped_ptr<fileapi::FileStreamWriter>();
 
+  if (url.type() == fileapi::kFileSystemTypeProvided) {
+    return file_system_provider_delegate_->CreateFileStreamWriter(
+        url, offset, context);
+  }
+
   DCHECK(url.type() == fileapi::kFileSystemTypeNativeLocal);
   return scoped_ptr<fileapi::FileStreamWriter>(
       fileapi::FileStreamWriter::CreateForLocalFile(
           context->default_file_task_runner(), url.path(), offset,
           fileapi::FileStreamWriter::OPEN_EXISTING_FILE));
 }
 
 bool FileSystemBackend::GetVirtualPath(
     const base::FilePath& filesystem_path,
     base::FilePath* virtual_path) {
   return mount_points_->GetVirtualPath(filesystem_path, virtual_path) ||
          system_mount_points_->GetVirtualPath(filesystem_path, virtual_path);
 }
 
 }  // namespace chromeos