Add md5 testing to netplay

Allows to test current game, an arbitrary game or the sdcard of all players
at once.

Source/Core/DolphinWX/NetPlay/MD5Dialog.h

@@ -0,0 +1,40 @@
+// Copyright 2016 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <map>
+#include <string>
+#include <vector>
+#include <vector>
+#include <wx/dialog.h>
+
+class NetPlayServer;
+class Player;
+class wxCloseEvent;
+class wxGauge;
+class wxStaticText;
+class wxWindow;
+
+class MD5Dialog final : public wxDialog
+{
+public:
+  MD5Dialog(wxWindow* parent, NetPlayServer* server, std::vector<const Player*> players,
+            const std::string& game);
+
+  void SetProgress(int pid, int progress);
+  void SetResult(int pid, const std::string& result);
+
+private:
+  bool AllHashesMatch() const;
+  void OnClose(wxCloseEvent& event);
+  void OnCloseBtnPressed(wxCommandEvent& event);
+
+  wxWindow* m_parent;
+  wxStaticText* m_final_result_label;
+  NetPlayServer* m_netplay_server;
+  std::map<int, wxGauge*> m_progress_bars;
+  std::map<int, wxStaticText*> m_result_labels;
+  std::vector<std::string> m_hashes;
+};