V8 Buildbot: Fix chromium win compile timeouts.
V8 Buildbot: Fix chromium win compile timeouts.

Both syzyasan and perf link times are longer than 20 minutes.

BUG=

Review URL: https://codereview.chromium.org/1145343003

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@295438 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build