Add new chrome://proximity-auth WebUI for debugging Smart Lock.

components/proximity_auth/webui/proximity_auth_webui_constants.h

Index: components/proximity_auth/webui/proximity_auth_webui_constants.h
diff --git a/components/proximity_auth/webui/proximity_auth_webui_constants.h b/components/proximity_auth/webui/proximity_auth_webui_constants.h
new file mode 100644
index 0000000000000000000000000000000000000000..cc3bfc987b6b66d81cf7624c3f19cd3a6bf76eca
--- /dev/null
+++ b/components/proximity_auth/webui/proximity_auth_webui_constants.h
@@ -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.
+
+#ifndef COMPONENTS_PROXIMITY_AUTH_WEBUI_PROXIMITY_AUTH_WEBUI_CONSTANTS_H_
+#define COMPONENTS_PROXIMITY_AUTH_WEBUI_PROXIMITY_AUTH_WEBUI_CONSTANTS_H_

[Ilya Sherman, 2015/04/14 00:25:44]

nit: Do we really need to repeat |proximity_auth_webui| twice in this filename? 
Maybe we should just name this "constants.h" or "webui_constants.h" or something
briefer like that?

[Tim Song, 2015/04/14 06:00:12]

Done. Renamed to url_constants for consistency with the other url_constants
files.

+
+namespace proximity_auth {
+
+extern const char kChromeUIProximityAuthURL[];
+extern const char kChromeUIProximityAuthHost[];
+
+}  // namespace dom_distiller
+
+#endif  // COMPONENTS_PROXIMITY_AUTH_WEBUI_PROXIMITY_AUTH_WEBUI_CONSTANTS_H_