Linux: fix segfault on exit
Linux: fix segfault on exit

Skia doesn't have a scoped_refptr, it has AutoUnref. The difference is
that the latter doesn't take a reference, it only deletes them. Thus
we need to increment the reference count manually when creating them.

BUG=9592


git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@12909 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser