Hearbeats now work. Moved checkAuth from Wakatime react class to main wakatime class.

assets/js/helpers/changeExtensionIcon.js

@@ -7,28 +7,13 @@
  */
 export default function changeExtensionIcon(color = '') {
 
-    var canvas = document.getElementById('icon');
-    var context = canvas.getContext('2d');
-
-    var x = 0;
-    var y = 0;
-    var width = 19;
-    var height = 19;
-    var imageObj = new Image();
-
-    imageObj.onload = function() {
-      context.drawImage(imageObj, x, y, width, height);
-
-      var imageData = context.getImageData(x, y, width, height);
-
-      chrome.browserAction.setIcon({
-          imageData: imageData
-      });
-    };
-
     if(color !== ''){
         color = '-' + color;
     }
 
-    imageObj.src = 'graphics/wakatime-logo-48' + color + '.png';
+    var path = './graphics/wakatime-logo-48' + color + '.png';
+
+    chrome.browserAction.setIcon({
+        path: path
+    });
 }