Fix DIR_SOURCE_ROOT for WebKit checkouts on linux

There's a hardcoded path fixup for base::DIR_SOURCE_ROOT for WebKit-only checkouts that wasn't
updated when the WebKit/chromium directory moved under Source/ a few weeks ago.

BUG=
TEST=

Review URL: http://codereview.chromium.org/6334035

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@73371 0039d316-1c4b-4281-b951-d872f2087c98
1 file changed