Re-enabled SPDY for M13 builds.
Re-enabled SPDY for M13 builds.

BUG=chromium-os:15960, chromium-os:15565
TEST=make sure SPDY connections show up at chrome:net-internals page in M13 builds

Change-Id: I03ab989b93f4e31487b06f5505da1d3c347e903f
Reviewed-on: http://gerrit.chromium.org/gerrit/1870
Tested-by: Zelidrag Hornung <2423ba2b026624ad482ad8e6887b2d657f9c0c43@chromium.org>
Reviewed-by: Mitsuru Oshima <fbeea5be5378e76774b0db1d0c75dc01a35e8a6b@chromium.org>

joshfire/chromiumos-platform-login_manager,joshfire/chromiumos-platform-login_manager,joshfire/chromiumos-platform-login_manager,chadversary/chromiumos.platform.login_manager,chadversary/chromiumos.platform.login_manager,chadversary/chromiumos.platform.login_manager