[Android] WINDOW_SERVICE should be accessed statically.

(it's a static final variable in the Context class, so... yeah).

Source/Android/src/org/dolphinemu/dolphinemu/DolphinEmulator.java

@@ -9,6 +9,7 @@
 import net.simonvt.menudrawer.MenuDrawer;
 
 import android.app.Activity;
+import android.content.Context;
 import android.content.Intent;
 import android.os.Bundle;
 import android.os.Environment;
@@ -135,7 +136,8 @@ public void onActivityResult(int requestCode, int resultCode, Intent data)
 		if (resultCode == Activity.RESULT_OK)
 		{
 			DisplayMetrics displayMetrics = new DisplayMetrics();
-			WindowManager wm = (WindowManager) getApplicationContext().getSystemService(getApplicationContext().WINDOW_SERVICE); // the results will be higher than using the activity context object or the getWindowManager() shortcut
+			getApplicationContext();
+            WindowManager wm = (WindowManager) getApplicationContext().getSystemService(Context.WINDOW_SERVICE); // the results will be higher than using the activity context object or the getWindowManager() shortcut
 			wm.getDefaultDisplay().getMetrics(displayMetrics);
 			screenWidth = displayMetrics.widthPixels;
 			screenHeight = displayMetrics.heightPixels;