Follow build target of Windows Clang.
Follow build target of Windows Clang.

This changes the config to follow the Windows clang's build target.

Review URL: https://codereview.chromium.org/673733003

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@292646 0039d316-1c4b-4281-b951-d872f2087c98

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