linux_aura: Default use_gnome_keyring% to on when use_aura=1.

BUG=342106

Review URL: https://codereview.chromium.org/171583002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@251992 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/build/common.gypi b/build/common.gypi
index 1bd4d51..4c85eaf 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -590,7 +590,7 @@
         # on gnome-keyring. If that dependency is disabled, no gnome-keyring
         # support will be available. This option is useful
         # for Linux distributions and for Aura.
-        ['OS!="linux" or chromeos==1 or use_aura==1', {
+        ['OS!="linux" or chromeos==1', {
           'use_gnome_keyring%': 0,
         }, {
           'use_gnome_keyring%': 1,