Use a temp file for get_factory_properties_from_disk
Use a temp file for get_factory_properties_from_disk

This avoids issues when masters print to stdout while loading them.

R=dpranke@chromium.org, newt@google.com
BUG=

Review URL: https://codereview.chromium.org/1191853002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@295712 0039d316-1c4b-4281-b951-d872f2087c98

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