ChromeOS: Fix build after r288451.

R=luken@chromium.org

Review URL: https://codereview.chromium.org/459563002

Cr-Commit-Position: refs/heads/master@{#288470}
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@288470 0039d316-1c4b-4281-b951-d872f2087c98

chrome/chrome_browser_chromeos.gypi

@@ -44,6 +44,7 @@
         '../breakpad/breakpad.gyp:breakpad_client',
         '../build/linux/system.gyp:dbus',
         '../chromeos/chromeos.gyp:chromeos',
+        '../chromeos/chromeos.gyp:cryptohome_proto',
         # browser_chromeos #includes signed_secret.pb.h directly.
         '../chromeos/chromeos.gyp:cryptohome_signkey_proto',
         # browser_chromeos #includes power_supply_properties.pb.h directly.