Remove the HInstruction utilities taking flag mask arguments.

Remove the HInstruction utilities taking flag mask arguments.

It is a type error to treat a flag (an enum) as if it were a flag mask (an
int derived from shifting a bit by the enum value).  It is error prone to
have functions that take flag mask arguments because they will silently
accept flags.

Committed: http://code.google.com/p/v8/source/detail?r=6500

[Mads Ager (chromium), 2011-01-26 15:26:24]

LGTM

[fschneider, 2011-01-26 15:43:15]

LGTM.