[extensions-web] common.js: removed duplicate code

[Yuri Konotopov <ykonotopov src gnome org>]

commit 4a6725b77cc13e587de4329f2d3bae6c7a2a3a02
Author: Yuri Konotopov <ykonotopov gnome org>
Date:   Sun Feb 12 12:39:30 2017 +0400

    common.js: removed duplicate code

 sweettooth/static/js/versions/common/common.js |   22 ++++------------------
 1 files changed, 4 insertions(+), 18 deletions(-)
---
diff --git a/sweettooth/static/js/versions/common/common.js b/sweettooth/static/js/versions/common/common.js
index 492999e..06f5c98 100644
--- a/sweettooth/static/js/versions/common/common.js
+++ b/sweettooth/static/js/versions/common/common.js
@@ -16,14 +16,14 @@ define(['jquery', 'dbus!API'], function ($, API) {
                return (new $.Deferred()).resolve(result);
        }
 
-       function _makePromise(result) {
+       function _makePromise(result, resolveValue) {
                // Check if result is promise already
                if (isPromise(result))
                {
                        return result;
                }
 
-               return _makeRawPromise(JSON.parse(result));
+               return _makeRawPromise(typeof(resolveValue) == 'undefined' ? JSON.parse(result) : 
resolveValue);
        }
 
        function isPromise(value) {
@@ -61,25 +61,11 @@ define(['jquery', 'dbus!API'], function ($, API) {
                },
 
                InstallExtensionOne: function (uuid) {
-                       var result = API.installExtension(uuid);
-
-                       if (isPromise(result))
-                       {
-                               return result;
-                       }
-
-                       return _makeRawPromise('succeeded');
+                       return _makePromise(API.installExtension(uuid), 'succeeded');
                },
 
                InstallExtensionTwo: function (uuid) {
-                       var result = API.installExtension(uuid, "");
-
-                       if (isPromise(result))
-                       {
-                               return result;
-                       }
-
-                       return _makeRawPromise('succeeded');
+                       return _makePromise(API.installExtension(uuid, ""), 'succeeded');
                },
 
                InstallExtensionAsync: function (uuid) {