Bug 1512037 - Bail out from prefersReducedMotion() if the target device is Android 4.1 or older. r=snorp

Settings.Global can't be used on such devices.

Differential Revision: https://phabricator.services.mozilla.com/D14226

--HG--
extra : moz-landing-system : lando

mobile/android/geckoview/src/main/java/org/mozilla/gecko/GeckoSystemStateListener.java

@@ -91,6 +91,10 @@ public class GeckoSystemStateListener
      * Uses `Settings.Global` which was introduced in API version 17.
      */
     private static boolean prefersReducedMotion() {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1) {
+          return false;
+        }
+
         ContentResolver contentResolver = sApplicationContext.getContentResolver();
 
         return Settings.Global.getFloat(contentResolver,