Rename browser/system_monitor to browser/storage_monitor.

R=vandebo@chromium.org
BUG=None


Review URL: https://chromiumcodereview.appspot.com/12312002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@183664 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 42 insertions, 0 deletions

diff --git a/chrome/browser/storage_monitor/transient_device_ids.cc b/chrome/browser/storage_monitor/transient_device_ids.cc
new file mode 100644
index 0000000..c6231a5
--- /dev/null
+++ b/chrome/browser/storage_monitor/transient_device_ids.cc
@@ -0,0 +1,42 @@
+// 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.
+
+// TransientDeviceIds implementation.
+
+#include "chrome/browser/storage_monitor/transient_device_ids.h"
+
+#include "base/logging.h"
+#include "chrome/browser/storage_monitor/media_storage_util.h"
+
+namespace chrome {
+
+TransientDeviceIds::TransientDeviceIds() : next_transient_id_(1) {}
+
+TransientDeviceIds::~TransientDeviceIds() {}
+
+uint64 TransientDeviceIds::GetTransientIdForDeviceId(
+    const std::string& device_id) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  DCHECK(MediaStorageUtil::IsRemovableDevice(device_id));
+
+  bool inserted =
+      id_map_.insert(std::make_pair(device_id, next_transient_id_)).second;
+  if (inserted) {
+    // Inserted a device that has never been seen before.
+    ++next_transient_id_;
+  }
+  return id_map_[device_id];
+}
+
+const std::string TransientDeviceIds::DeviceIdFromTransientId(
+    uint64 transient_id) const {
+  for (DeviceIdToTransientIdMap::const_iterator iter = id_map_.begin();
+       iter != id_map_.end(); ++iter) {
+    if (iter->second == transient_id)
+      return iter->first;
+  }
+  return std::string();
+}
+
+}  // namespace chrome