Switching xp-newlib-coverage bot to use factory with proper target_platform.
Switching xp-newlib-coverage bot to use factory with proper target_platform.

gclient_revert has been failing on this bot due to it using a factory with
target_platform set to linux, when win32 is needed.

BUG=https://code.google.com/p/chromium/issues/detail?id=242358
TEST=None
R=xusydoc@chromium.org

Review URL: https://chromiumcodereview.appspot.com/16140003

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@202615 0039d316-1c4b-4281-b951-d872f2087c98

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