Move storage-related files from webkit/ to new top-level directory storage/

webkit/browser/fileapi/sandbox_file_system_backend.cc

-// 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.
-
-#include "webkit/browser/fileapi/sandbox_file_system_backend.h"
-
-#include "base/bind.h"
-#include "base/file_util.h"
-#include "base/logging.h"
-#include "base/metrics/histogram.h"
-#include "base/task_runner_util.h"
-#include "url/gurl.h"
-#include "webkit/browser/blob/file_stream_reader.h"
-#include "webkit/browser/fileapi/async_file_util_adapter.h"
-#include "webkit/browser/fileapi/copy_or_move_file_validator.h"
-#include "webkit/browser/fileapi/file_stream_writer.h"
-#include "webkit/browser/fileapi/file_system_context.h"
-#include "webkit/browser/fileapi/file_system_operation.h"
-#include "webkit/browser/fileapi/file_system_operation_context.h"
-#include "webkit/browser/fileapi/file_system_options.h"
-#include "webkit/browser/fileapi/file_system_usage_cache.h"
-#include "webkit/browser/fileapi/obfuscated_file_util.h"
-#include "webkit/browser/fileapi/sandbox_file_system_backend_delegate.h"
-#include "webkit/browser/fileapi/sandbox_quota_observer.h"
-#include "webkit/browser/quota/quota_manager.h"
-#include "webkit/common/fileapi/file_system_types.h"
-#include "webkit/common/fileapi/file_system_util.h"
-
-using quota::QuotaManagerProxy;
-using quota::SpecialStoragePolicy;
-
-namespace fileapi {
-
-SandboxFileSystemBackend::SandboxFileSystemBackend(
-    SandboxFileSystemBackendDelegate* delegate)
-    : delegate_(delegate),
-      enable_temporary_file_system_in_incognito_(false) {
-}
-
-SandboxFileSystemBackend::~SandboxFileSystemBackend() {
-}
-
-bool SandboxFileSystemBackend::CanHandleType(FileSystemType type) const {
-  return type == kFileSystemTypeTemporary ||
-         type == kFileSystemTypePersistent;
-}
-
-void SandboxFileSystemBackend::Initialize(FileSystemContext* context) {
-  DCHECK(delegate_);
-
-  // Set quota observers.
-  delegate_->RegisterQuotaUpdateObserver(fileapi::kFileSystemTypeTemporary);
-  delegate_->AddFileAccessObserver(
-      fileapi::kFileSystemTypeTemporary,
-      delegate_->quota_observer(), NULL);
-
-  delegate_->RegisterQuotaUpdateObserver(fileapi::kFileSystemTypePersistent);
-  delegate_->AddFileAccessObserver(
-      fileapi::kFileSystemTypePersistent,
-      delegate_->quota_observer(), NULL);
-}
-
-void SandboxFileSystemBackend::ResolveURL(
-    const FileSystemURL& url,
-    OpenFileSystemMode mode,
-    const OpenFileSystemCallback& callback) {
-  DCHECK(CanHandleType(url.type()));
-  DCHECK(delegate_);
-  if (delegate_->file_system_options().is_incognito() &&
-      !(url.type() == kFileSystemTypeTemporary &&
-        enable_temporary_file_system_in_incognito_)) {
-    // TODO(kinuko): return an isolated temporary directory.
-    callback.Run(GURL(), std::string(), base::File::FILE_ERROR_SECURITY);
-    return;
-  }
-
-  delegate_->OpenFileSystem(url.origin(),
-                            url.type(),
-                            mode,
-                            callback,
-                            GetFileSystemRootURI(url.origin(), url.type()));
-}
-
-AsyncFileUtil* SandboxFileSystemBackend::GetAsyncFileUtil(
-    FileSystemType type) {
-  DCHECK(delegate_);
-  return delegate_->file_util();
-}
-
-CopyOrMoveFileValidatorFactory*
-SandboxFileSystemBackend::GetCopyOrMoveFileValidatorFactory(
-    FileSystemType type,
-    base::File::Error* error_code) {
-  DCHECK(error_code);
-  *error_code = base::File::FILE_OK;
-  return NULL;
-}
-
-FileSystemOperation* SandboxFileSystemBackend::CreateFileSystemOperation(
-    const FileSystemURL& url,
-    FileSystemContext* context,
-    base::File::Error* error_code) const {
-  DCHECK(CanHandleType(url.type()));
-  DCHECK(error_code);
-
-  DCHECK(delegate_);
-  scoped_ptr<FileSystemOperationContext> operation_context =
-      delegate_->CreateFileSystemOperationContext(url, context, error_code);
-  if (!operation_context)
-    return NULL;
-
-  SpecialStoragePolicy* policy = delegate_->special_storage_policy();
-  if (policy && policy->IsStorageUnlimited(url.origin()))
-    operation_context->set_quota_limit_type(quota::kQuotaLimitTypeUnlimited);
-  else
-    operation_context->set_quota_limit_type(quota::kQuotaLimitTypeLimited);
-
-  return FileSystemOperation::Create(url, context, operation_context.Pass());
-}
-
-bool SandboxFileSystemBackend::SupportsStreaming(
-    const fileapi::FileSystemURL& url) const {
-  return false;
-}
-
-scoped_ptr<webkit_blob::FileStreamReader>
-SandboxFileSystemBackend::CreateFileStreamReader(
-    const FileSystemURL& url,
-    int64 offset,
-    const base::Time& expected_modification_time,
-    FileSystemContext* context) const {
-  DCHECK(CanHandleType(url.type()));
-  DCHECK(delegate_);
-  return delegate_->CreateFileStreamReader(
-      url, offset, expected_modification_time, context);
-}
-
-scoped_ptr<fileapi::FileStreamWriter>
-SandboxFileSystemBackend::CreateFileStreamWriter(
-    const FileSystemURL& url,
-    int64 offset,
-    FileSystemContext* context) const {
-  DCHECK(CanHandleType(url.type()));
-  DCHECK(delegate_);
-  return delegate_->CreateFileStreamWriter(url, offset, context, url.type());
-}
-
-FileSystemQuotaUtil* SandboxFileSystemBackend::GetQuotaUtil() {
-  return delegate_;
-}
-
-SandboxFileSystemBackendDelegate::OriginEnumerator*
-SandboxFileSystemBackend::CreateOriginEnumerator() {
-  DCHECK(delegate_);
-  return delegate_->CreateOriginEnumerator();
-}
-
-}  // namespace fileapi