Clean up the x64 Valgrind reports a bit.
Clean up the x64 Valgrind reports a bit.

Extend a suppression for bug 57910 (Leak in zlib from a call by
remoting::DecompressorZlib::InitStream)
Extend a suppression for bug 44966 (Occasional event_del leak/invalid read)
Add a suppression for bug 51332 (Leak of sec_PKCS12EncoderContext contents in
NSS PKCS #12 encoder)
Add a new zlib suppression (http://www.zlib.net/zlib_faq.html#faq36)

TBR=timurrrr
BUG=57910,44966,51332

Review URL: http://codereview.chromium.org/5241004

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@66956 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