Disable /0 variant of...

Disable /0 variant of ViewSourceWithSplitCacheEnabledTest.NetworkIsolationKeyReusedForBackNavigation.

Dissable the test when the parameter is 'false'.

TBR=yaoxia@chromium.org

Bug: 1024033
Change-Id: Ia6f2b8e727437b2269f28c8c1353f41e83322510
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1913606Reviewed-by: James MacLean <wjmaclean@chromium.org>
Commit-Queue: James MacLean <wjmaclean@chromium.org>
Cr-Commit-Position: refs/heads/master@{#714840}

chrome/browser/tab_contents/view_source_browsertest.cc

@@ -533,6 +533,11 @@ using ViewSourceWithSplitCacheEnabledTest = ViewSourceWithSplitCacheTest;
 // of the network isolation key is a.com (reused).
 IN_PROC_BROWSER_TEST_P(ViewSourceWithSplitCacheEnabledTest,
                        NetworkIsolationKeyReusedForBackNavigation) {
+  if (!GetParam()) {
+    // Flaky in /0 variant: https://crbug.com/1024033.
+    return;
+  }
+
   content::SetupCrossSiteRedirector(embedded_test_server());
   ASSERT_TRUE(embedded_test_server()->Start());