mobile

Hi, im the owner of a at&t LG G2 D800 and i am pleased with the device but i found annoying to have so many apps that are useless so i decide to root the device and start deleting apps. The problem is that yesterday y was trying to remove the LG stock gallery app but instead of deleting the LG gallery.apk i deleted another app named very similar. Now, i dont remember exactly what the name of the app was, (gallery browser.apk maybe?) but now when i use the camera for taking a picture and i press the preview icon in the corner of the screen, the gallery app does not open to actually preview the picture.
I was wondering if someone have this same device could use root browser and send me that specific app to repair my broken preview option.

PS: The app has the same icon that LGgallery.apk, but its called something like galleybrowser, im not sure if its located inside system/app or system/priv-app.

I would be very thankful if someone could help me :)

Sorry for my bad english its not my first language :p