Underwater fog too dense / can't see through / pure blue

Verification builds:
#332621

Summary:
Underwater Water is too dense / unplayable / different from MCPC

Impact:
We can't customize fog density and color to make it look like PureBDcraft on MCPC

Repro Steps:
1. Go underwater on MCPC
2. Go underwater on MCPE
3. Compare

Observed Results:
MCPE underwater has a very dense fog with a color which can't be customized via Texture pack.

Expected Results:
Underwater effect with same density as in MCPC and with a customizable color via Texture pack

Screenshots/Videos attached: Yes