Try to fix loading COM objects living in %CommonProgramFiles% on build slaves.
Try to fix loading COM objects living in %CommonProgramFiles% on build slaves.

This will likely have some side effects on the tests, now they should be able to
load many COM objects that couldn't be loaded before.

R=iannucci@chromium.org
BUG=319379

Review URL: https://codereview.chromium.org/72853002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@235190 0039d316-1c4b-4281-b951-d872f2087c98

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