Revert of "Add tab.IsServiceWorkerReadyOrNotRegist() which tells whether serviceworker ..."

telemetry/telemetry/internal/browser/tab_unittest.py

Index: telemetry/telemetry/internal/browser/tab_unittest.py
diff --git a/telemetry/telemetry/internal/browser/tab_unittest.py b/telemetry/telemetry/internal/browser/tab_unittest.py
index f31e6b30798a0d664543ff4209171d1d6446e70c..df7c0b43acd7159defc5b3ef718257c10987a315 100644
--- a/telemetry/telemetry/internal/browser/tab_unittest.py
+++ b/telemetry/telemetry/internal/browser/tab_unittest.py
@@ -8,7 +8,6 @@
 
 from telemetry.core import exceptions
 from telemetry import decorators
-from telemetry.internal.browser.web_contents import ServiceWorkerState
 from telemetry.internal.image_processing import video
 from telemetry.testing import tab_test_case
 from telemetry.timeline import model
@@ -248,17 +247,3 @@
       time.sleep(1)
     self.assertEquals(len(self.tabs), 2)
     self.assertEquals(self.tabs[1].url, 'chrome://media-router/')
-
-class ServiceWorkerTabTest(tab_test_case.TabTestCase):
-  def testIsServiceWorkerActivatedOrNotRegistered(self):
-    self._tab.Navigate(self.UrlOfUnittestFile('blank.html'))
-    self.assertEquals(self._tab.QueryServiceWorkerState(),
-                      ServiceWorkerState.NOT_REGISTERED)
-    self._tab.ExecuteJavaScript(
-        'if ("serviceWorker" in navigator) { \
-            navigator.serviceWorker.register("{{ @scriptURL }}") };',
-        scriptURL=self.UrlOfUnittestFile('blank.js'))
-    py_utils.WaitFor(self._tab.IsServiceWorkerActivatedOrNotRegistered,
-                     timeout=5)
-    self.assertEquals(self._tab.QueryServiceWorkerState(),
-                      ServiceWorkerState.ACTIVATED)