Typo fix for r47191.

submitted for [email protected] (http://codereview.chromium.org/2106001)

Review URL: http://codereview.chromium.org/2127004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@47237 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/build/install-build-deps.sh b/build/install-build-deps.sh
index 8261b70..057b76b 100755
--- a/build/install-build-deps.sh
+++ b/build/install-build-deps.sh
@@ -161,7 +161,7 @@
 
 # CUPS package changed it's name from hardy to the next version. Include
 # proper package here depending on the system.
-if ! egrep -q 'Ubuntu (8\.04|8\.10)' /etc/issue; then
+if egrep -q 'Ubuntu (8\.04|8\.10)' /etc/issue; then
   dev_list="${dev_list} libcupsys2-dev"
 else
   dev_list="${dev_list} libcups2-dev"