Cleanup FileSystemOperation for preparing for adding FSO-factory method

webkit/fileapi/file_system_context.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/fileapi/file_system_context.h"
 
+#include "base/bind.h"
 #include "base/file_util.h"
 #include "base/message_loop_proxy.h"
 #include "googleurl/src/gurl.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebFileSystem.h"
+#include "webkit/fileapi/file_system_callback_dispatcher.h"
 #include "webkit/fileapi/file_system_file_util.h"
 #include "webkit/fileapi/file_system_options.h"
 #include "webkit/fileapi/file_system_quota_client.h"
 #include "webkit/fileapi/file_system_util.h"
 #include "webkit/fileapi/sandbox_mount_point_provider.h"
 #include "webkit/quota/quota_manager.h"
 #include "webkit/quota/special_storage_policy.h"
 
 #if defined(OS_CHROMEOS)
 #include "webkit/chromeos/fileapi/cros_mount_point_provider.h"
 #endif
 
 using quota::QuotaClient;
 
 namespace fileapi {
 
 namespace {
 
 QuotaClient* CreateQuotaClient(
     scoped_refptr<base::MessageLoopProxy> file_message_loop,
     FileSystemContext* context,
     bool is_incognito) {
   return new FileSystemQuotaClient(file_message_loop, context, is_incognito);
 }
 
+void DidOpenFileSystem(scoped_ptr<FileSystemCallbackDispatcher> dispatcher,
+                       const GURL& filesystem_root,
+                       const std::string& filesystem_name,
+                       base::PlatformFileError error) {
+  if (error == base::PLATFORM_FILE_OK) {
+    dispatcher->DidOpenFileSystem(filesystem_name, filesystem_root);
+  } else {
+    dispatcher->DidFail(error);
+  }
+}
+
 }  // anonymous namespace
 
 FileSystemContext::FileSystemContext(
     scoped_refptr<base::MessageLoopProxy> file_message_loop,
     scoped_refptr<base::MessageLoopProxy> io_message_loop,
     scoped_refptr<quota::SpecialStoragePolicy> special_storage_policy,
     quota::QuotaManagerProxy* quota_manager_proxy,
     const FilePath& profile_path,
     const FileSystemOptions& options)
     : file_message_loop_(file_message_loop),
@@ skipping 87 matching lines @@
 }
 
 void FileSystemContext::DeleteOnCorrectThread() const {
   if (!io_message_loop_->BelongsToCurrentThread()) {
     io_message_loop_->DeleteSoon(FROM_HERE, this);
     return;
   }
   delete this;
 }
 
+void FileSystemContext::OpenFileSystem(
+    const GURL& origin_url,
+    FileSystemType type,
+    bool create,
+    scoped_ptr<FileSystemCallbackDispatcher> dispatcher) {
+  DCHECK(dispatcher.get());
+  FileSystemMountPointProvider* mount_point_provider =
+      GetMountPointProvider(type);
+  if (!mount_point_provider) {
+    dispatcher->DidFail(base::PLATFORM_FILE_ERROR_SECURITY);
+    return;
+  }
+
+  GURL root_url = GetFileSystemRootURI(origin_url, type);
+  std::string name = GetFileSystemName(origin_url, type);
+
+  mount_point_provider->ValidateFileSystemRoot(
+      origin_url, type, create,
+      base::Bind(&DidOpenFileSystem,
+                 base::Passed(&dispatcher), root_url, name));
+}
+
 }  // namespace fileapi
 
 COMPILE_ASSERT(int(WebKit::WebFileSystem::TypeTemporary) == \
                int(fileapi::kFileSystemTypeTemporary), mismatching_enums);
 COMPILE_ASSERT(int(WebKit::WebFileSystem::TypePersistent) == \
                int(fileapi::kFileSystemTypePersistent), mismatching_enums);
 COMPILE_ASSERT(int(WebKit::WebFileSystem::TypeExternal) == \
                int(fileapi::kFileSystemTypeExternal), mismatching_enums);