mandoline filesystem: Save cookie data to the mojo:filesystem.

components/filesystem/file_system_impl.h

 // Copyright 2015 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 COMPONENTS_FILESYSTEM_FILE_SYSTEM_IMPL_H_
 #define COMPONENTS_FILESYSTEM_FILE_SYSTEM_IMPL_H_
 
 #include "base/macros.h"
 #include "components/filesystem/public/interfaces/file_system.mojom.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
 #include "mojo/public/cpp/bindings/strong_binding.h"
 
+namespace base {
+class FilePath;
+}
+
 namespace mojo {
 class ApplicationConnection;
 }
 
 namespace filesystem {
 
 class FileSystemImpl : public FileSystem {
  public:
   FileSystemImpl(mojo::ApplicationConnection* connection,
                  mojo::InterfaceRequest<FileSystem> request);
   ~FileSystemImpl() override;
 
   // |Files| implementation:
-  // We provide a "private" temporary file system as the default. In Debug
-  // builds, we also provide access to a common file system named "debug"
-  // (stored under ~/MojoDebug).
+
+  // Current valid values for |file_system| are "temp" for a temporary
+  // filesystem and "origin" for a persistent filesystem bound to the origin of
+  // the URL of the caller.
   void OpenFileSystem(const mojo::String& file_system,
                       mojo::InterfaceRequest<Directory> directory,
                       const OpenFileSystemCallback& callback) override;
 
  private:
+  // Gets the system specific toplevel profile directory.
+  base::FilePath GetSystemProfileDir() const;
+
+  // Takes the origin string from |remote_application_url_|.
+  std::string GetOriginFromRemoteApplicationURL() const;
+
+  // Sanitizes |origin| so it is an acceptable filesystem name.
+  void BuildSanitizedOrigin(const std::string& origin,
+                            std::string* sanitized_origin);
+
   const std::string remote_application_url_;
   mojo::StrongBinding<FileSystem> binding_;
 
   DISALLOW_COPY_AND_ASSIGN(FileSystemImpl);
 };
 
 }  // namespace filesystem
 
 #endif  // COMPONENTS_FILESYSTEM_FILE_SYSTEM_IMPL_H_