[Blimp] Adds Blimp EngineSession and ClientSession skeleton

blimp/net/BUILD.gn

 # 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.
 
 import("//testing/test.gni")
 
 component("blimp_net") {
   sources = [
+    "blimp_client_session.cc",
+    "blimp_client_session.h",
     "blimp_message_dispatcher.cc",
     "blimp_message_dispatcher.h",
     "blimp_message_receiver.h",
     "blimp_net_export.h",
   ]
 
   defines = [ "BLIMP_NET_IMPLEMENTATION=1" ]
 
   deps = [
     "//base",
@@ skipping 20 matching lines @@
 }
 
 # TODO(GYP): Delete this after we've converted everything to GN.
 # # The _run targets exist only for compatibility w/ GYP.
 group("blimp_net_tests_run") {
   testonly = true
   deps = [
     ":blimp_net_tests",
   ]
 }