Disable flaky IsolatedAppTest.CrossProcessClientRedirect.

It's flaky on Windows on regular browser_tests and heavily
flaky on Mojo Linux's network_service_in_process_browser_tests. We plan
to make network_service_in_process_browser_tests part of the main
waterfall (crbug.com/1040384), so disable it until it's fixed.

Bug: 1032668
Change-Id: I5af450c5f85cfb237fa8670ca185d973e78429b9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1999885Reviewed-by: Maksim Orlovich <morlovich@chromium.org>
Reviewed-by: Istiaque Ahmed <lazyboy@chromium.org>
Commit-Queue: Matt Falkenhagen <falken@chromium.org>
Cr-Commit-Position: refs/heads/master@{#731876}

chrome/browser/extensions/isolated_app_browsertest.cc

@@ -135,7 +135,8 @@ class IsolatedAppTest : public ExtensionBrowserTest {
   }
 };
 
-IN_PROC_BROWSER_TEST_F(IsolatedAppTest, CrossProcessClientRedirect) {
+// Flaky: https://crbug.com/1032668
+IN_PROC_BROWSER_TEST_F(IsolatedAppTest, DISABLED_CrossProcessClientRedirect) {
   ASSERT_TRUE(embedded_test_server()->Start());
 
   ASSERT_TRUE(LoadExtension(test_data_dir_.AppendASCII("isolated_apps/app1")));