[Pkg-chromium-maint] Bug#749934: workaround, install pepperflash

[Dominique Brazziel]

	After going to the Adobe site
(https://www.adobe.com/software/flash/about/)
to see about downloading a later version of the plugin, I noticed that
the latest version of Adobe Flash plugin is 13.0.0.214, but
package 'flashplugin-nonfree' only provides 11.2.202.359.

	Package 'pepperflashplugin-nonfree'  
(https://packages.debian.org/jessie/pepperflashplugin-nonfree)
provides the latest flash plugin (and gets rid of annoying
messages, plugs some security holes, and shows up in 'about:plugins').
See the wiki page https://wiki.debian.org/PepperFlashPlayer for details.