Update glance activation method for different platforms

Author: mauro-balades

src/browser/app/profile/zen-browser.js

@@ -97,9 +97,14 @@ pref('zen.view.compact.color-toolbar', true);
 pref('zen.view.compact.color-sidebar', true);
 
 pref('zen.glance.enabled', true);
-pref('zen.glance.activation-method', 'alt'); // ctrl, alt, shift, none, hold
 pref('zen.glance.hold-duration', 300); // in ms
 
+#ifdef XP_MACOSX
+pref('zen.glance.activation-method', 'alt'); // ctrl, alt, shift, none, hold
+#else
+pref('zen.glance.activation-method', 'ctrl'); // ctrl, alt, shift, none, hold
+#endif
+
 pref('zen.view.sidebar-height-throttle', 200); // in ms
 pref('zen.view.sidebar-expanded', true);
 pref('zen.view.sidebar-expanded.on-hover', false);