Fix #includes in components/proximity_auth/cryptauth.

components/proximity_auth/cryptauth/switches.cc

Index: components/proximity_auth/cryptauth/switches.cc
diff --git a/components/proximity_auth/cryptauth/switches.cc b/components/proximity_auth/cryptauth/switches.cc
new file mode 100644
index 0000000000000000000000000000000000000000..f894c8dbfa68a42295fcb17e9dfb8b7ced7cede0
--- /dev/null
+++ b/components/proximity_auth/cryptauth/switches.cc
@@ -0,0 +1,15 @@
+// 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 "components/proximity_auth/cryptauth/switches.h"
+
+namespace proximity_auth {
+namespace switches {
+
+// Overrides the default URL for Google APIs (https://www.googleapis.com) used
+// by CryptAuth.
+const char kCryptAuthHTTPHost[] = "cryptauth-http-host";
+
+}  // namespace switches
+}  // namespace proximity_auth