Make the screenshare notification window 85% opaque.

Make the screenshare notification window 85% opaque.
This is to avoid users using the window for hiding sensitive contents that they don't want to share.
See https://code.google.com/p/webrtc/issues/detail?id=2789#c36

BUG=https://code.google.com/p/webrtc/issues/detail?id=2789

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=260224

[jiayl, 2014-03-27 21:46:25]

msw: ui/views
rsesek: ui/cocoa

PTAL. Thanks!

[msw, 2014-03-28 00:09:05]

c/b/ui/views lgtm

[Wez, 2014-03-28 00:19:43]

nit: CL description should probably read "slightly transparent"; you're actually
making it 85% opaque, not 85% transparent.". :)

[jiayl, 2014-03-28 00:23:25]

On 2014/03/28 00:19:43, Wez wrote:
> nit: CL description should probably read "slightly transparent"; you're
actually
> making it 85% opaque, not 85% transparent.". :)

Yeah, I changed the description to "85% opaque" right after I published it. :)

[Robert Sesek, 2014-03-28 14:53:46]

lgtm

[jiayl, 2014-03-28 15:36:51]

The CQ bit was checked by jiayl@chromium.org

[commit-bot: I haz the power, 2014-03-28 15:38:35]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jiayl@chromium.org/215363003/1

[commit-bot: I haz the power, 2014-03-28 16:10:11]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-03-28 16:10:11]

Retried try job too often on win_rel for step(s) base_unittests, browser_tests,
interactive_ui_tests, net_unittests, unit_tests
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_rel&nu...

[jiayl, 2014-03-28 16:17:39]

The CQ bit was checked by jiayl@chromium.org

[commit-bot: I haz the power, 2014-03-28 16:20:40]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jiayl@chromium.org/215363003/20001

[commit-bot: I haz the power, 2014-03-28 19:07:40]

Change committed as 260224