[Blimp] Adds Blimp EngineSession and ClientSession skeleton

blimp/net/blimp_client_session.cc

Index: blimp/net/blimp_client_session.cc
diff --git a/blimp/net/blimp_client_session.cc b/blimp/net/blimp_client_session.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c412be2274d965ca27834cfd02920b4ea5408ce2
--- /dev/null
+++ b/blimp/net/blimp_client_session.cc
@@ -0,0 +1,13 @@
+// Copyright 2015 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 "blimp/net/blimp_client_session.h"
+
+namespace blimp {
+
+BlimpClientSession::BlimpClientSession() {}
+
+BlimpClientSession::~BlimpClientSession() {}
+
+}  // namespace blimp