Isolated FS for media devices.

webkit/fileapi/media_device_map_service.cc

Index: webkit/fileapi/media_device_map_service.cc
diff --git a/webkit/fileapi/media_device_map_service.cc b/webkit/fileapi/media_device_map_service.cc
new file mode 100644
index 0000000000000000000000000000000000000000..0817ff9cd16a9167b4b712c2662122b427522774
--- /dev/null
+++ b/webkit/fileapi/media_device_map_service.cc
@@ -0,0 +1,57 @@
+// 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/media_device_map_service.h"
+
+#include <utility>
+
+#if defined(OS_WIN)
+#include "webkit/fileapi/mtp_device_interface_win.h"
+#elif defined(OS_POSIX) && !defined(OS_MACOSX)
+#include "webkit/fileapi/mtp_device_interface_linux.h"
+#endif
+
+namespace fileapi {
+
+// static
+MediaDeviceMapService* MediaDeviceMapService::GetInstance() {
+  return Singleton<MediaDeviceMapService>::get();
+}
+
+void MediaDeviceMapService::AddMediaDevice(
+    const FilePath::StringType& device_id) {
+  base::AutoLock lock (media_device_map_lock_);
+  MediaDeviceMap::const_iterator it = media_device_map_.find(device_id);
+  if (it == media_device_map_.end()) {
+    media_device_map_.insert(std::make_pair(device_id,
+                                            new MediaDevice(device_id)));
+  }
+}
+
+void MediaDeviceMapService::RemoveMediaDevice(
+    const FilePath::StringType& device_id) {
+  base::AutoLock lock(media_device_map_lock_);
+  MediaDeviceMap::iterator it = media_device_map_.find(device_id);
+  if (it != media_device_map_.end())
+    media_device_map_.erase(it);
+}
+
+bool MediaDeviceMapService::GetMediaDevice(
+    const FilePath::StringType& device_id,
+    scoped_refptr<MediaDevice>* device) {
+  base::AutoLock lock(media_device_map_lock_);
+  MediaDeviceMap::iterator it = media_device_map_.find(device_id);
+  if (it == media_device_map_.end())
+    return false;
+  *device = it->second;
+  return true;
+}
+
+MediaDeviceMapService::MediaDeviceMapService() {
+}
+
+MediaDeviceMapService::~MediaDeviceMapService() {
+}
+
+}  // namespace fileapi