Detect chrome book user agent.

src/bowser.js

@@ -24,6 +24,7 @@
     var iosdevice = getFirstMatch(/(ipod|iphone|ipad)/i).toLowerCase()
       , likeAndroid = /like android/i.test(ua)
       , android = !likeAndroid && /android/i.test(ua)
+      , chromeBook = /CrOS/.test(ua)
       , edgeVersion = getFirstMatch(/edge\/(\d+(\.\d+)?)/i)
       , versionIdentifier = getFirstMatch(/version\/(\d+(\.\d+)?)/i)
       , tablet = /tablet/i.test(ua)
@@ -64,8 +65,14 @@
       , msie: t
       , version: getFirstMatch(/(?:msie |rv:)(\d+(\.\d+)?)/i)
       }
-    }
-    else if (/chrome.+? edge/i.test(ua)) {
+    } else if (chromeBook) {
+      result = {
+        name: 'Chrome'
+      , chromeBook: t
+      , chrome: t
+      , version: getFirstMatch(/(?:chrome|crios|crmo)\/(\d+(\.\d+)?)/i)
+      }
+    } else if (/chrome.+? edge/i.test(ua)) {
       result = {
         name: 'Microsoft Edge'
       , msedge: t

src/useragents.js

@@ -86,6 +86,7 @@ module.exports.useragents = {
       }
     , 'Mozilla/5.0 (X11; CrOS i686 4319.74.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.57 Safari/537.36': {
         chrome: true
+      , chromeBook: true
       , version: '29.0'
       , webkit: true
       , a: true