mojo leveldb: Get profile and leveldb connected to DOMStorageContext.

components/profile_service/profile_service_impl.cc

 // Copyright 2016 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 "components/profile_service/profile_service_impl.h"
 
+#include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
+#include "base/strings/utf_string_conversions.h"
 #include "components/filesystem/directory_impl.h"
 #include "components/filesystem/lock_table.h"
+#include "components/filesystem/public/interfaces/types.mojom.h"
 #include "mojo/shell/public/cpp/connection.h"
+#include "mojo/shell/public/cpp/message_loop_ref.h"
 
 namespace profile {
 
 ProfileServiceImpl::ProfileServiceImpl(
     mojo::Connection* connection,
-    mojo::InterfaceRequest<ProfileService> request,
-    base::FilePath base_profile_dir,
+    ProfileServiceRequest request,
+    scoped_ptr<mojo::MessageLoopRef> ref,
+    const base::FilePath& base_profile_dir,
     filesystem::LockTable* lock_table)
-    : binding_(this, std::move(request)),
+    : message_loop_ref_(std::move(ref)),
+      binding_(this, std::move(request)),
       lock_table_(lock_table),
       path_(base_profile_dir) {
-  if (!base::PathExists(path_))
-    base::CreateDirectory(path_);
+  base::CreateDirectory(path_);
 }
 
-ProfileServiceImpl::~ProfileServiceImpl() {
-}
+ProfileServiceImpl::~ProfileServiceImpl() {}
 
 void ProfileServiceImpl::GetDirectory(
-    mojo::InterfaceRequest<filesystem::Directory> request) {
+    filesystem::DirectoryRequest request,
+    const GetDirectoryCallback& callback) {
   new filesystem::DirectoryImpl(std::move(request),
                                 path_,
                                 scoped_ptr<base::ScopedTempDir>(),
                                 lock_table_);
+  callback.Run();
+}
+
+void ProfileServiceImpl::GetSubDirectory(
+    const mojo::String& dir_name,

[michaeln, 2016/03/16 03:11:13]

since this can actually be a nested directory path, consider renaming it?

+    filesystem::DirectoryRequest request,
+    const GetSubDirectoryCallback& callback) {
+  // Ensure that we've made |subdirectory| recursively under our profile.
+  base::FilePath subdir =
+      path_.Append(
+#if defined(OS_WIN)
+          base::UTF8ToWide(dir_name.To<std::string>()));
+#else
+          dir_name.To<std::string>());
+#endif
+  base::File::Error error;
+  if (!base::CreateDirectoryAndGetError(subdir, &error)) {
+    callback.Run(static_cast<filesystem::FileError>(error));
+    return;
+  }
+
+  new filesystem::DirectoryImpl(std::move(request),
+                                subdir,
+                                scoped_ptr<base::ScopedTempDir>(),
+                                lock_table_);
+  callback.Run(filesystem::FileError::OK);
 }
 
 }  // namespace profile