Adding the Copresence RpcHandler and HttpPost helper.

components/copresence/copresence_switches.h

Index: components/copresence/copresence_switches.h
diff --git a/components/copresence/copresence_switches.h b/components/copresence/copresence_switches.h
new file mode 100644
index 0000000000000000000000000000000000000000..7637e75c77886d66b0bce9468788199ada59a226
--- /dev/null
+++ b/components/copresence/copresence_switches.h
@@ -0,0 +1,17 @@
+// 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.
+
+#ifndef COMPONENTS_COPRESENCE_COPRESENCE_SWITCHES_H_
+#define COMPONENTS_COPRESENCE_COPRESENCE_SWITCHES_H_
+
+namespace switches {
+
+// All switches in alphabetical order. The switches should be documented
+// alongside the definition of their values in the .cc file.
+extern const char kCopresenceServer[];
+extern const char kCopresenceTracingToken[];
+
+}  // namespace switches
+
+#endif  // COMPONENTS_COPRESENCE_COPRESENCE_SWITCHES_H_