Merge pull request #1886 from FearlessTobi/port-4164

Port citra-emu/citra#4164: "citra_qt, video_core: Screenshot functionality"

src/yuzu/main.h

@@ -189,6 +189,7 @@ private slots:
     void ShowFullscreen();
     void HideFullscreen();
     void ToggleWindowMode();
+    void OnCaptureScreenshot();
     void OnCoreError(Core::System::ResultStatus, std::string);
     void OnReinitializeKeys(ReinitializeKeyBehavior behavior);