ServiceWorker: Make "ready" fetches registration from browser process(2/3).

chrome/test/data/push_messaging/push_test.js

Index: chrome/test/data/push_messaging/push_test.js
diff --git a/chrome/test/data/push_messaging/push_test.js b/chrome/test/data/push_messaging/push_test.js
index be99f626758be52981619306697ee0e4d1853747..490febcfad40e27c1f4e906a49ebc3805471a7b8 100644
--- a/chrome/test/data/push_messaging/push_test.js
+++ b/chrome/test/data/push_messaging/push_test.js
@@ -92,8 +92,23 @@ function removeManifest() {
   }
 }
 
+// TODO(xiang): Remove this function after "ready" CL landed.

[falken, 2015/03/05 09:21:52]

I'm confused, I thought *this* is the "ready" CL? How does this CL break
navigator.serviceWorker.ready?

+function getReadyRegistration() {
+  return navigator.serviceWorker.getRegistration().then(function(r) {
+    if (r.active)
+      return r;
+    var worker = r.waiting ? r.waiting : r.installing;
+    return new Promise(function(resolve) {
+      worker.onstatechange = function() {
+        if (worker.state === 'activating')
+          resolve(r);
+      };
+    });
+  });
+}
+
 function registerPush() {
-  navigator.serviceWorker.ready.then(function(swRegistration) {
+  getReadyRegistration().then(function(swRegistration) {
     var registerMethodName =
         swRegistration.pushManager.register ? 'register' : 'subscribe';
     return swRegistration.pushManager[registerMethodName]()
@@ -106,7 +121,7 @@ function registerPush() {
 }
 
 function hasPermission() {
-  navigator.serviceWorker.ready.then(function(swRegistration) {
+  getReadyRegistration().then(function(swRegistration) {
     return swRegistration.pushManager.hasPermission()
         .then(function(permission) {
           sendResultToTest('permission status - ' + permission);
@@ -138,7 +153,7 @@ function unregister() {
 }
 
 function hasRegistration() {
-  navigator.serviceWorker.ready.then(function(swRegistration) {
+  getReadyRegistration().then(function(swRegistration) {
     return swRegistration.pushManager.getSubscription();
   }).then(function(subscription) {
     sendResultToTest(subscription ? 'true - registered'