Implement debugging local unlock keys in chrome://proximity-auth.

components/proximity_auth/client_impl.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_CLIENT_IMPL_H
 #define COMPONENTS_PROXIMITY_AUTH_CLIENT_IMPL_H
 
 #include <deque>
 
 #include "base/macros.h"
@@ skipping 24 matching lines @@
   ~ClientImpl() override;
 
   // Client:
   void AddObserver(ClientObserver* observer) override;
   void RemoveObserver(ClientObserver* observer) override;
   bool SupportsSignIn() const override;
   void DispatchUnlockEvent() override;
   void RequestDecryption(const std::string& challenge) override;
   void RequestUnlock() override;
 
- protected:
   // Exposed for testing.
   Connection* connection() { return connection_.get(); }
+
+ protected:
   SecureContext* secure_context() { return secure_context_.get(); }
 
  private:
   // Internal data structure to represent a pending message that either hasn't
   // been sent yet or is waiting for a response from the remote device.
   struct PendingMessage {
     PendingMessage();
     PendingMessage(const base::DictionaryValue& message);
     ~PendingMessage();
 
@@ skipping 54 matching lines @@
   scoped_ptr<PendingMessage> pending_message_;
 
   base::WeakPtrFactory<ClientImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ClientImpl);
 };
 
 }  // namespace proximity_auth
 
 #endif  // COMPONENTS_PROXIMITY_AUTH_CLIENT_IMPL_H