Issue 5083 - Merges chrome subdirectory to top level directory

ext/common.js

Index: ext/common.js
===================================================================
--- a/ext/common.js
+++ b/ext/common.js
@@ -43,9 +43,39 @@
       let listeners = this._listeners.slice();
 
       for (let listener of listeners)
         results.push(listener(...args));
 
       return results;
     }
   };
+
+  // Workaround since HTMLCollection and NodeList didn't have iterator support
+  // before Chrome 51.
+  // https://bugs.chromium.org/p/chromium/issues/detail?id=401699
+  let arrayIterator = Array.prototype[Symbol.iterator];
+  if (!(Symbol.iterator in HTMLCollection.prototype))
+    HTMLCollection.prototype[Symbol.iterator] = arrayIterator;
+  if (!(Symbol.iterator in NodeList.prototype))
+    NodeList.prototype[Symbol.iterator] = arrayIterator;
+
+  /* Message passing */
+
+  ext.onMessage = new ext._EventTarget();
+
+
+  /* Background page */
+
+  ext.backgroundPage = {
+    sendMessage: chrome.runtime.sendMessage,
+    getWindow()
+    {
+      return chrome.extension.getBackgroundPage();
+    }
+  };
+
+
+  /* Utils */
+
+  ext.getURL = chrome.extension.getURL;
+  ext.i18n = chrome.i18n;
 }());