Move inline som functions ScopedDBusError into a .cc file

dbus/scoped_dbus_error.cc

Index: dbus/scoped_dbus_error.cc
diff --git a/dbus/scoped_dbus_error.cc b/dbus/scoped_dbus_error.cc
new file mode 100644
index 0000000000000000000000000000000000000000..fa049718ef049614772226221e1bdcded777ec21
--- /dev/null
+++ b/dbus/scoped_dbus_error.cc
@@ -0,0 +1,21 @@
+// 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 "dbus/scoped_dbus_error.h"
+
+namespace dbus {
+
+ScopedDBusError::ScopedDBusError() {
+  dbus_error_init(&error_);
+}
+
+ScopedDBusError::~ScopedDBusError() {
+  dbus_error_free(&error_);
+}
+
+bool ScopedDBusError::is_set() const {
+  return dbus_error_is_set(&error_);
+}
+
+}  // namespace dbus