This is a regression on 5.5 branch from p2 to p3 (not reproducible on trunk).

Empty iOS project created with Unity uses WebCamTexture and Microphone classes without usage descriptions in info.plist, therefore the app cannot be submitted to the App Store.

Steps to reproduce:
1) Create a new project.
2) Build for iOS.

Notice the Console warnings:
WebCamTexture class is used but Camera Usage Description is empty. App will not work on iOS 10+.
Microphone class is used but Microphone Usage Description is empty. App will not work on iOS 10+.

Also, when the Xcode project is deployed on a device, UNITY_USES_WEBCAM returns true.
This prevents the app from being submitted to the app store.

Reproduced on:
5.5.0p4, 5.5.0p3

Did not reproduce:
5.5.0p2, 5.6.0b4