Remove flaky test for WINDOWS_GETCURRENT API

This CL removes WINDOWS_GETCURRENT API test coverage from
ServiceWorkerBasedBackgroundTest. The reason is 1)The test is flaky, 2)The API test coverage is already added in NonPersistentExtensionTabsTest.TabCurrentWindow.

Bug: 1140254
Change-Id: I90d93a27d3c3f420b2a12f17a38503850f33bf79
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2487868Reviewed-by: David Bertoni <dbertoni@chromium.org>
Commit-Queue: Ghazale Hosseinabadi <ghazale@chromium.org>
Cr-Commit-Position: refs/heads/master@{#819399}

chrome/browser/extensions/service_worker_apitest.cc

@@ -420,9 +420,6 @@ IN_PROC_BROWSER_TEST_F(ServiceWorkerBasedBackgroundTest, WindowsBasic) {
   EXPECT_EQ(1, histogram_tester.GetBucketCount(
                    "Extensions.Functions.ExtensionServiceWorkerCalls",
                    functions::HistogramValue::WINDOWS_GET));
-  EXPECT_EQ(1, histogram_tester.GetBucketCount(
-                   "Extensions.Functions.ExtensionServiceWorkerCalls",
-                   functions::HistogramValue::WINDOWS_GETCURRENT));
 }
 
 // Tests chrome.webRequest APIs.

chrome/test/data/extensions/api_test/service_worker/worker_based_background/windows_basic/service_worker_background.js

@@ -27,14 +27,6 @@ var getWindowUtil = function(windowId, getCallback) {
   }
 }
 
-var getCurrentWindowUtil = function(getCurrentCallback) {
-  try {
-    chrome.windows.getCurrent(getCurrentCallback);
-  } catch (e) {
-    chrome.test.fail(e);
-  }
-}
-
 chrome.test.runTests([
   // Get the window that was automatically created.
   function testWindowGetAllBeforeCreate() {
@@ -63,12 +55,6 @@ chrome.test.runTests([
         chrome.test.assertEq(400, windowData.height);
         chrome.test.succeed();
       });
-      // Check that the created window is the current window.
-      getCurrentWindowUtil(function(currentWindowData) {
-        chrome.test.assertEq(createdWindowId, currentWindowData.id);
-        chrome.test.succeed();
-      });
-      chrome.test.succeed();
     });
   },
   ]);