Implement clearBrowser().

lib/roles/device/plugins/browser.js

@@ -12,14 +12,16 @@ module.exports = syrup.serial()
   .define(function(options, router, push, adb, input) {
     var log = logger.createLogger('device:plugins:browsers')
 
+    function pkg(component) {
+      return component.split('/', 1)[0]
+    }
+
     log.info('Fetching browser list')
     return input.getBrowsers()
       .timeout(15000)
       .then(function(browsers) {
         browsers.apps.forEach(function(app) {
-          var pkg = app.component.split('/', 1)[0]
-
-          switch (pkg) {
+          switch (pkg(app.component)) {
             case 'com.android.chrome':
               app.type = 'chrome'
               break
@@ -66,6 +68,24 @@ module.exports = syrup.serial()
             })
         })
 
+        router.on(wire.BrowserClearMessage, function(channel, message) {
+          var reply = wireutil.reply(options.serial)
+          adb.clear(options.serial, pkg(message.browser))
+            .then(function() {
+              push.send([
+                channel
+              , reply.okay()
+              ])
+            })
+            .catch(function(err) {
+              log.error('Browser could not be cleared', err.stack)
+              push.send([
+                channel
+              , reply.fail()
+              ])
+            })
+        })
+
         return browsers
       })
   })