bluetooth: Basic browser tests for chrome://bluetooth-internals.

chrome/browser/resources/bluetooth_internals/interfaces.js

Index: chrome/browser/resources/bluetooth_internals/interfaces.js
diff --git a/chrome/browser/resources/bluetooth_internals/interfaces.js b/chrome/browser/resources/bluetooth_internals/interfaces.js
index 2054100ce11e530620c02795fc24715ff086974e..675e6cfc749ac09b3114ffbe464e617a3eb12979 100644
--- a/chrome/browser/resources/bluetooth_internals/interfaces.js
+++ b/chrome/browser/resources/bluetooth_internals/interfaces.js
@@ -8,21 +8,6 @@
  */
 
 cr.define('interfaces', function() {
-
-  /**
-   * TODO(crbug.com/652361): Move to shared location.
-   * Helper to convert callback-based define() API to a promise-based API.
-   * @param {!Array<string>} moduleNames
-   * @return {!Promise}
-   */
-  function importModules(moduleNames) {
-    return new Promise(function(resolve, reject) {
-      define(moduleNames, function(var_args) {
-        resolve(Array.prototype.slice.call(arguments, 0));
-      });
-    });
-  }
-
   /**
    * Initializes Mojo proxies for page and Bluetooth services.
    * @return {!Promise} resolves if adapter is acquired, rejects if Bluetooth
@@ -63,7 +48,18 @@ cr.define('interfaces', function() {
     });
   }
 
+  /**
+  * Overriden by tests to give them a chance to setup a fake Mojo browser proxy
+  * before any other code executes.
+  * @return {!Promise} A promise firing once necessary setup has been completed.
+  */
+  var setupFn = window.setupFn || function() { return Promise.resolve(); };
+
+  function initialize() {
+    return setupFn().then(initializeProxies);
+  }
+
   return {
-    initialize: initializeProxies,
+    initialize: initialize,
   };
 });