Added image pattern comparison logic for test interface and fixture.

remoting/test/app_remoting_connection_helper.h

 // 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 REMOTING_TEST_APP_REMOTING_CONNECTION_HELPER_H_
 #define REMOTING_TEST_APP_REMOTING_CONNECTION_HELPER_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 37 matching lines @@
   // Stubs used to send messages to the remote host. Caller should not release
   // the objects.
   protocol::ClipboardStub* clipboard_forwarder();
   protocol::HostStub* host_stub();
   protocol::InputStub* input_stub();
 
   // Setter for |host_message_received_callback_|.
   void SetHostMessageReceivedCallback(
       HostMessageReceivedCallback host_message_received_callback);
 
-  // Reset |host_message_received_callback_ to null|.
-  void ResetHostMessageReceivedCallback();
-
  private:
   // RemoteConnectionObserver interface.
   void ConnectionStateChanged(protocol::ConnectionToHost::State state,
                               protocol::ErrorCode error_code) override;
   void ConnectionReady(bool ready) override;
   void HostMessageReceived(const protocol::ExtensionMessage& message) override;
 
   // Sends client details to the host in order to complete the connection.
   void SendClientConnectionDetailsToHost();
 
@@ skipping 26 matching lines @@
   // Creates and manages the connection to the remote host.
   scoped_ptr<TestChromotingClient> client_;
 
   DISALLOW_COPY_AND_ASSIGN(AppRemotingConnectionHelper);
 };
 
 }  // namespace test
 }  // namespace remoting
 
 #endif  // REMOTING_TEST_APP_REMOTING_CONNECTION_HELPER_H_