Add a private PPB_Talk_Private interface.

Add a private PPB_Talk_Private interface. 

It exposes one function that sends a message to the browser and issues a reply. The
browser doesn't implement this yet.

BUG=117564
TEST=

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=127564

[jam, 2012-03-15 02:06:32]

see my comment in https://chromiumcodereview.appspot.com/9683003/. this can be
simplified if you just send a sync IPC

[varunjain, 2012-03-15 17:41:08]

On 2012/03/15 02:06:32, John Abd-El-Malek wrote:
> see my comment in https://chromiumcodereview.appspot.com/9683003/. this can be
> simplified if you just send a sync IPC

Done.

[varunjain, 2012-03-15 17:50:34]

On 2012/03/15 17:41:08, varunjain wrote:
> On 2012/03/15 02:06:32, John Abd-El-Malek wrote:
> > see my comment in https://chromiumcodereview.appspot.com/9683003/. this can
be
> > simplified if you just send a sync IPC
> 
> Done.

Deleted my sync patch set.

[varunjain, 2012-03-19 09:07:21]

Brett, I have changed this patch so that the plugin side proxy now sends a
message directly to the browser (the browser will display a system modal dialog
box). PTAL.


On 2012/03/15 17:50:34, varunjain wrote:
> On 2012/03/15 17:41:08, varunjain wrote:
> > On 2012/03/15 02:06:32, John Abd-El-Malek wrote:
> > > see my comment in https://chromiumcodereview.appspot.com/9683003/. this
can
> be
> > > simplified if you just send a sync IPC
> > 
> > Done.
> 
> Deleted my sync patch set.

[brettw, 2012-03-19 17:46:42]

lgtm

[commit-bot: I haz the power, 2012-03-19 18:43:47]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/varunjain@chromium.org/9700028/8001

[commit-bot: I haz the power, 2012-03-19 20:17:48]

Try job failure for 9700028-8001 (retry) on mac_rel for step "browser_tests"
(clobber build).
It's a second try, previously, step "compile" failed.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=mac_rel&nu...

[commit-bot: I haz the power, 2012-03-19 20:36:15]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/varunjain@chromium.org/9700028/8001

[commit-bot: I haz the power, 2012-03-19 23:00:32]

Try job failure for 9700028-8001 (retry) on win_rel for step "browser_tests".
It's a second try, previously, steps "browser_tests, installer_util_unittests"
failed.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win_rel&nu...