MainNoGUI: Move a majority of the event handling from the GLX backend

The only reason the GLX backend handled this at all was because
MainNoGUI didn't make its own window before. This is unused in DolphinWX
builds.

Source/Core/DolphinWX/GLInterface/X11_Util.cpp

@@ -8,8 +8,6 @@
 
 void cX11Window::CreateXWindow(void)
 {
-	Atom wmProtocols[1];
-
 	// Setup window attributes
 	GLWin.attr.colormap = XCreateColormap(GLWin.dpy,
 			GLWin.parent, GLWin.vi->visual, AllocNone);
@@ -22,9 +20,7 @@ void cX11Window::CreateXWindow(void)
 			0, 0, 1, 1, 0,
 			GLWin.vi->depth, InputOutput, GLWin.vi->visual,
 			CWBorderPixel | CWBackPixel | CWColormap | CWEventMask, &GLWin.attr);
-	wmProtocols[0] = XInternAtom(GLWin.dpy, "WM_DELETE_WINDOW", True);
-	XSetWMProtocols(GLWin.dpy, GLWin.win, wmProtocols, 1);
-	XMapRaised(GLWin.dpy, GLWin.win);
+	XMapWindow(GLWin.dpy, GLWin.win);
 	XSync(GLWin.dpy, True);
 
 	GLWin.xEventThread = std::thread(&cX11Window::XEventThread, this);
@@ -51,11 +47,6 @@ void cX11Window::XEventThread()
 				case ConfigureNotify:
 					GLInterface->SetBackBufferDimensions(event.xconfigure.width, event.xconfigure.height);
 					break;
-				case ClientMessage:
-					if ((unsigned long) event.xclient.data.l[0] ==
-							XInternAtom(GLWin.dpy, "WM_DELETE_WINDOW", False))
-						Host_Message(WM_USER_STOP);
-					break;
 				default:
 					break;
 			}

Source/Core/DolphinWX/MainNoGUI.cpp

@@ -148,6 +148,9 @@ class PlatformX11 : public Platform
 					  SConfig::GetInstance().m_LocalCoreStartupParameter.iRenderWindowHeight,
 					  0, 0, BlackPixel(dpy, 0));
 		XSelectInput(dpy, win, KeyPressMask | FocusChangeMask);
+		Atom wmProtocols[1];
+		wmProtocols[0] = XInternAtom(dpy, "WM_DELETE_WINDOW", True);
+		XSetWMProtocols(dpy, win, wmProtocols, 1);
 		XMapRaised(dpy, win);
 		XFlush(dpy);
 		windowHandle = (void *) win;
@@ -250,6 +253,10 @@ class PlatformX11 : public Platform
 					if (SConfig::GetInstance().m_LocalCoreStartupParameter.bHideCursor)
 						XUndefineCursor(dpy, win);
 					break;
+				case ClientMessage:
+					if ((unsigned long) event.xclient.data.l[0] == XInternAtom(dpy, "WM_DELETE_WINDOW", False))
+						running = false;
+					break;
 				}
 			}
 			if (!fullscreen)