Reland "Disable NetworkChangeManagerClientBrowserTest.ReconnectToNetworkService"

This is a reland of 8af85474

The original author is rmcelrath@chromium.org, yhirano replaced DISABLE_ with
DISABLED_.

Original change's description:
> Disable NetworkChangeManagerClientBrowserTest.ReconnectToNetworkService
>
> This test is flaky on ChromeOS when the network service is enabled.
>
> Bug: 934583
> Change-Id: Ib0a37e995a69555b5a5381bdef24f92fd19c12d9
> Reviewed-on: https://chromium-review.googlesource.com/c/1482005
> Reviewed-by: John Abd-El-Malek <jam@chromium.org>
> Commit-Queue: Robbie McElrath <rmcelrath@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#634467}

Bug: 934583
Tbr: jam@chromium.org
Change-Id: I87dc76c9e36f25d78279105b03ea9b3340e47718
Reviewed-on: https://chromium-review.googlesource.com/c/1482278
Auto-Submit: Yutaka Hirano <yhirano@chromium.org>
Reviewed-by: Yutaka Hirano <yhirano@chromium.org>
Commit-Queue: Robbie McElrath <rmcelrath@chromium.org>
Cr-Commit-Position: refs/heads/master@{#634867}

chrome/browser/chromeos/network_change_manager_client_browsertest.cc

@@ -138,8 +138,9 @@ IN_PROC_BROWSER_TEST_F(NetworkChangeManagerClientBrowserTest,
 
 // Tests that the NetworkChangeManagerClient reconnects to the network service
 // after it gets disconnected.
+// TODO(crbug.com/934583): Fix the flakiness.
 IN_PROC_BROWSER_TEST_F(NetworkChangeManagerClientBrowserTest,
-                       ReconnectToNetworkService) {
+                       DISABLED_ReconnectToNetworkService) {
   if (!base::FeatureList::IsEnabled(network::features::kNetworkService))
     return;