Remove -blacklist and -whitelist arguments

They're useless since the removal of HostedMode in favor of DevMode.

Change-Id: If07bfd9571a02d24566029099549a6a857e5b1a6
Make GWT use |0 consistently for coercion.

Earlier both ~~ and |0 were being used for coercion.
I chose |0 as it is one op instead of two and used it
everywhere.

Change-Id: I6b7072146998af751d48e9de074d5b99a7844fb7
Review-Link: https://gwt-review.googlesource.com/#/c/10000/