Adding the Copresence RpcHandler and HttpPost helper.

components/copresence/copresence_switches.cc

Index: components/copresence/copresence_switches.cc
diff --git a/components/copresence/copresence_switches.cc b/components/copresence/copresence_switches.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f7a3bc7af4f052d78775071a6ed3e7801f4749a1
--- /dev/null
+++ b/components/copresence/copresence_switches.cc
@@ -0,0 +1,16 @@
+// Copyright 2014 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 "components/copresence/copresence_switches.h"
+
+namespace switches {
+
+// Address for calls to the Copresence server (via Apiary).
+// Defaults to https://www.googleapis.com/copresence/v2/copresence.
+const char kCopresenceServer[] = "copresence-server";
+
+// Apiary tracing token for calls to the Copresence server.
+const char kCopresenceTracingToken[] = "copresence-tracing-token";
+
+}  // namespace switches