Debugging for https://crbug.com/601435.

extensions/renderer/resources/keep_alive.js

Index: extensions/renderer/resources/keep_alive.js
diff --git a/extensions/renderer/resources/keep_alive.js b/extensions/renderer/resources/keep_alive.js
index 5269c30285feccbec774f0a911c2b5ca04a017a5..b957b12f449aaac3b4bb21705e3f505b5b438b39 100644
--- a/extensions/renderer/resources/keep_alive.js
+++ b/extensions/renderer/resources/keep_alive.js
@@ -8,6 +8,9 @@ define('keep_alive', [
     'mojo/public/js/core',
 ], function(serviceProvider, mojom, core) {
 
+  // Putting the handles somewhere causes them to not get lost.
+  var allHandles = [];
+
   /**
    * An object that keeps the background page alive until closed.
    * @constructor
@@ -20,6 +23,7 @@ define('keep_alive', [
      * @private
      */
     this.handle_ = serviceProvider.connectToService(mojom.KeepAlive.name);
+    allHandles.push(this.handle_);
   }
 
   /**