Remove stale comment about Chrome Frame.

Remove stale comment about Chrome Frame.

BUG=316496
NOTRY=true
R=msw@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=245153

[grt (UTC plus 2), 2014-01-14 15:29:54]

Hi Mike,

Removing this comment since it's no longer relevant. If you were waiting to do
other cleanups once Chrome Frame no longer used these constants, you're free to
do so now.

Cheers.

[msw, 2014-01-14 16:18:11]

Great, looks like I can remove all three, inlining kAboutVersionURL to its one
unit test user, and replacing the one use of kAboutPluginsURL with
kChromeUIPluginsURL. LGTM.

[commit-bot: I haz the power, 2014-01-14 17:05:43]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/grt@chromium.org/138053005/1

[commit-bot: I haz the power, 2014-01-14 23:55:14]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/grt@chromium.org/138053005/1

[commit-bot: I haz the power, 2014-01-15 04:45:53]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/grt@chromium.org/138053005/1

[commit-bot: I haz the power, 2014-01-16 05:51:36]

Change committed as 245153