Add support for UC Browser.

Closes #134.

Author: gauravvarshneymmt

platform.js

@@ -389,6 +389,7 @@
       'Waterfox',
       'WebPositive',
       { 'label': 'Yandex Browser', 'pattern': 'YaBrowser' },
+      { 'label': 'UC Browser', 'pattern': 'UCBrowser' },
       'Opera Mini',
       { 'label': 'Opera Mini', 'pattern': 'OPiOS' },
       'Opera',
@@ -673,6 +674,10 @@
         description.unshift('accelerated');
       }
     }
+    // Detect UC Browser speed mode.
+    else if (name == 'UC Browser' && /\bUCWEB\b/.test(ua)) {
+      description.push('speed mode');
+    }
     // Detect PaleMoon identifying as Firefox.
     else if (name == 'PaleMoon' && (data = /\bFirefox\/([\d.]+)\b/.exec(ua))) {
       description.push('identifying as Firefox ' + data[1]);
@@ -702,7 +707,7 @@
     // Detect non-Opera (Presto-based) versions (order is important).
     if (!version) {
       version = getVersion([
-        '(?:Cloud9|CriOS|CrMo|Edge|Edg|EdgA|EdgiOS|FxiOS|HeadlessChrome|IEMobile|Iron|Opera ?Mini|OPiOS|OPR|Raven|SamsungBrowser|Silk(?!/[\\d.]+$)|YaBrowser)',
+        '(?:Cloud9|CriOS|CrMo|Edge|Edg|EdgA|EdgiOS|FxiOS|HeadlessChrome|IEMobile|Iron|Opera ?Mini|OPiOS|OPR|Raven|SamsungBrowser|Silk(?!/[\\d.]+$)|UCBrowser|YaBrowser)',
         'Version',
         qualify(name),
         '(?:Firefox|Minefield|NetFront)'

test/test.js

@@ -2612,6 +2612,43 @@
       'version': '3.0.10#{alpha}'
      },
 
+     'UC Browser 11.3.0.950 (like Chrome 12.x) on Android 5.0':{
+      'ua': 'Mozilla/5.0 (Linux; U; Android 5.0; en-US; SM-N900 Build/LRX21V) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 UCBrowser/11.3.0.950 U3/0.8.0 Mobile Safari/534.30',
+      'layout': 'WebKit',
+      'likeChrome': true,
+      'name': 'UC Browser',
+      'os': 'Android 5.0',
+      'version': '11.3.0.950'
+    },
+
+    'UC Browser 11.3.5.1203 (like Safari 7.x) on Apple iPhone (iOS 12.4.7)':{
+      'ua': 'Mozilla/5.0 (iPhone; CPU iPhone OS 12_4_7 like Mac OS X; ru) AppleWebKit/537.51.1 (KHTML, like Gecko) Mobile/16G192 UCBrowser/11.3.5.1203 Mobile',
+      'layout': 'WebKit',
+      'manufacturer': 'Apple',
+      'name': 'UC Browser',
+      'os': 'iOS 12.4.7',
+      'product': 'iPhone',
+      'version': '11.3.5.1203'
+    },
+
+    'UC Browser 13.2.0.1296 (like Chrome 57.0.2987.108) on Android 10':{
+      'ua': 'Mozilla/5.0 (Linux; U; Android 10; ar-SA; SM-N975F Build/QP1A.190711.020) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/57.0.2987.108 UCBrowser/13.2.0.1296 Mobile Safari/537.36',
+      'layout': 'Blink',
+      'likeChrome': true,
+      'name': 'UC Browser',
+      'os': 'Android 10',
+      'version': '13.2.0.1296'
+    },
+
+    'UC Browser 13.2.0.1296 (speed mode; like Chrome 12.x) on Android 9':{
+      'ua': 'Mozilla/5.0 (Linux; U; Android 9; en-US; Redmi Note 5 Pro Build/PKQ1.180904.001) AppleWebKit/534.30 (KHTML, like Gecko) Version/4.0 UCBrowser/13.2.0.1296 (SpeedMode) U4/1.0 UCWEB/2.0 Mobile Safari/534.30',
+      'layout': 'WebKit',
+      'likeChrome': true,
+      'name': 'UC Browser',
+      'os': 'Android 9',
+      'version': '13.2.0.1296'
+    },
+
      'Vivaldi 3.1.4 (like Chrome 81.0.3298.14) on Linux 64-bit': {
       'ua': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.3298.14 Safari/537.36 Vivaldi/3.1.4',
       'layout': 'Blink',