Exclude some QUIC tests as they fail under Dr.Memory
BUG=347512
TBR=oshima

Review URL: https://codereview.chromium.org/183053002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@253757 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 253757