Allows chrome_elf_unittests to be run under SyzyASan.

This also fix a missing dependency on chrome_elf_unittests, it should have a dependency on chrome_elf.dll and chrome.exe if you want to be able to do:
- ninja -C out\Release chrome_elf_unittests
- out\Release\chrome_elf_unittests.exe

on a fresh checkout...

R=robertshield@chromium.org

Review URL: https://codereview.chromium.org/132823006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@246061 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 246061