fix chrome/utility lacking dependency on chrome_strings
Fixes build break on official canaries. Only manifested on VS builds,
only clobbers, and only "sometimes" because other projects build
chrome_strings too, so depending on the build order, the build might
succeed. This is why Chrome Win Official, etc. are still all green.
TBR=jam@chromium.org
R=karen@chromium.org
BUG=
Review URL: https://codereview.chromium.org/
19775016
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@212608 0039d316-1c4b-4281-b951-d872f2087c98