Use gray icon by default for page action to fix regression in Chrome

Related to #600

Author: zalmoxisus

src/app/middlewares/api.js

@@ -178,7 +178,10 @@ function onConnect(port) {
     connections.tab[id] = port;
     listener = msg => {
       if (msg.name === 'INIT_INSTANCE') {
-        if (typeof id === 'number') chrome.pageAction.show(id);
+        if (typeof id === 'number') {
+          chrome.pageAction.show(id);
+          chrome.pageAction.setIcon({tabId: id, path: 'img/logo/38x38.png'});
+        }
         if (isMonitored) port.postMessage({ type: 'START' });
 
         const state = window.store.getState();

src/assets/img/logo/gray.png

@@ -6,7 +6,7 @@
   "homepage_url": "https://github.com/zalmoxisus/redux-devtools-extension",
   "manifest_version": 2,
   "page_action": {
-    "default_icon": "img/logo/38x38.png",
+    "default_icon": "img/logo/gray.png",
     "default_title": "Redux DevTools",
     "default_popup": "window.html#popup"
   },