Removing DataSource from Filter hierarchy

media/base/mock_data_source_host.cc

Index: media/base/mock_data_source_host.cc
diff --git a/media/base/mock_data_source_host.cc b/media/base/mock_data_source_host.cc
new file mode 100644
index 0000000000000000000000000000000000000000..eff0b78f1630cc16dde554b3bdd41f9cf7063107
--- /dev/null
+++ b/media/base/mock_data_source_host.cc
@@ -0,0 +1,13 @@
+// Copyright (c) 2011 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 "media/base/mock_data_source_host.h"
+
+namespace media {
+
+MockDataSourceHost::MockDataSourceHost() {}
+
+MockDataSourceHost::~MockDataSourceHost() {}
+
+}  // namespace media