Infobar unknown plugins by default on Linux

Infobar unknown plugins by default on Linux

The user will be asked for confirmation via an infobar before we let any
of the dangerous unknown plugins installed by default on many Linux
distributions run.

BUG=132679
TEST=


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=148682

[jln (very slow on Chromium), 2012-07-26 22:07:18]

That should dramatically improve Chrome on Linux security!

[Bernhard Bauer, 2012-07-26 22:10:46]

LGTM

https://chromiumcodereview.appspot.com/10821042/diff/1/chrome/browser/rendere...
File chrome/browser/renderer_host/plugin_info_message_filter.cc (right):

https://chromiumcodereview.appspot.com/10821042/diff/1/chrome/browser/rendere...
chrome/browser/renderer_host/plugin_info_message_filter.cc:163: #if
defined(OS_LINUX) && !defined(OS_CHROMEOS)
Nit: the OS_CHROMEOS check is unnecessary; ENABLE_PLUGIN_INSTALLATION is not
defined on Chrome OS (or any platforms that doesn't support NPAPI).

[jln (very slow on Chromium), 2012-07-26 22:27:05]

Lei, do you mind approving this as OWNER of chrome/ ?

[Lei Zhang, 2012-07-26 22:29:56]

lgtm

[commit-bot: I haz the power, 2012-07-26 22:32:01]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jln@chromium.org/10821042/1002

[commit-bot: I haz the power, 2012-07-27 01:03:12]

Change committed as 148682