GTK: More 2.18 goodness. Move from macros to real accessor functions.

GTK: More 2.18 goodness. Move from macros to real accessor functions.

This does not take care of everything! There are many deprecated macros that we
can't replace because their accessor replacements were in 2.20 or later.

BUG=none
TEST=none


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=91761

[Elliot Glaysher, 2011-07-07 17:43:34]

Eventually, we will get to GTK3 compatibility. Too bad about a certain binary
plugin. And too bad that there are a lot of macros that were deprecated in 2.20
and later.

[Evan Martin, 2011-07-07 17:50:30]

LGTM

[commit-bot: I haz the power, 2011-07-07 20:29:18]

Try job failure for 7227027-2001 (retry) on win for step "compile" (clobber
build).
It's a second try, previously, step "compile" failed.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win&number...

[commit-bot: I haz the power, 2011-07-07 21:50:31]

Change committed as 91761

[Jeff Bailey (chromium), 2011-07-22 18:11:20]

lgtm

I'm curious why you opted to move the isVisible into the function instead of
leaving it in the header, but it's still correct. =)