Improve device detection for unknown VR device

Author: faisalman

Diff for: src/main/ua-parser.js

@@ -856,10 +856,8 @@
             // MIXED (GENERIC)
             ///////////////////
 
-            /droid .+?; ([^;]+?)(?: bui|; wv\)|\) applew).+? mobile safari/i    // Android Phones from Unidentified Vendors
-            ], [MODEL, [TYPE, MOBILE]], [
-            /droid .+?; ([^;]+?)(?: bui|\) applew).+?(?! mobile) safari/i       // Android Tablets from Unidentified Vendors
-            ], [MODEL, [TYPE, TABLET]], [
+            /droid .+?; ([^;]+?)(?: bui|; wv\)|\) applew).+?(mobile|vr|\d) safari/i
+            ], [MODEL, [TYPE, strMapper, { 'mobile' : 'Mobile', 'xr' : 'VR', '*' : TABLET }]], [
             /\b((tablet|tab)[;\/]|focus\/\d(?!.+mobile))/i                      // Unidentifiable Tablet
             ], [[TYPE, TABLET]], [
             /(phone|mobile(?:[;\/]| [ \w\/\.]*safari)|pda(?=.+windows ce))/i    // Unidentifiable Mobile

Diff for: test/data/ua/device/_others.json

@@ -24,6 +24,14 @@
             "type": "mobile"
         }
     },
+    {
+        "desc": "Unknown VR Device",
+        "ua": "Mozilla/5.0 (Linux; Android 5.0.2; Unknown Build/LRX22G) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/4.0 Chrome/44.0.2403.133 Mobile VR Safari/537.36",
+        "expect": {
+            "model": "Unknown",
+            "type": "xr"
+        }
+    },
     {
         "desc": "Desktop (IE11 with Tablet string)",
         "ua": "Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; .NET4.0E; .NET4.0C; .NET CLR 3.5.30729; .NET CLR 2.0.50727; .NET CLR 3.0.30729; Tablet PC 2.0; GWX:MANAGED; rv:11.0) like Gecko",