Migrate weave-related classes from proximity_auth/ble to cryptauth/ble.

components/cryptauth/connection_finder.h

 // 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_PROXIMITY_AUTH_CONNECTION_FINDER_H
-#define COMPONENTS_PROXIMITY_AUTH_CONNECTION_FINDER_H
+#ifndef COMPONENTS_CRYPTAUTH_CONNECTION_FINDER_H
+#define COMPONENTS_CRYPTAUTH_CONNECTION_FINDER_H
 
 #include <memory>
 
 #include "base/callback_forward.h"
 #include "base/macros.h"
+#include "components/cryptauth/connection.h"
 
-namespace proximity_auth {
-
-class Connection;
+namespace cryptauth {
 
 // Interface for finding a connection to a remote device.
 class ConnectionFinder {
  public:
   virtual ~ConnectionFinder() {}
 
   // Attempts to find a connection to a remote device. The finder will try to
   // find the connection indefinitely until the finder is destroyed. Calls
   // |connection_callback| with the open connection once the remote device is
   // connected.
   // TODO(isherman): Can this just be done as part of the constructor?
   typedef base::Callback<void(std::unique_ptr<Connection> connection)>
       ConnectionCallback;
   virtual void Find(const ConnectionCallback& connection_callback) = 0;
 };
 
-}  // namespace proximity_auth
+}  // namespace cryptauth
 
-#endif  // COMPONENTS_PROXIMITY_AUTH_CONNECTION_FINDER_H
+#endif  // COMPONENTS_CRYPTAUTH_CONNECTION_FINDER_H