Partially disable BrowsingDataRemoverBrowserTest.SessionOnlyStorageRemoved

LocalStorage deletion due to Clear-On-Exit is flaky on all plattforms.
Disable this part of the test.

TBR: jsbell@chromium.org
Bug: 927312
Change-Id: I3833461f283704bc5db2c52816e42013672c531c
Reviewed-on: https://chromium-review.googlesource.com/c/1448186Reviewed-by: Christian Dullweber <dullweber@chromium.org>
Commit-Queue: Christian Dullweber <dullweber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#627959}

chrome/browser/browsing_data/browsing_data_remover_browsertest.cc

@@ -1351,8 +1351,10 @@ IN_PROC_BROWSER_TEST_F(BrowsingDataRemoverBrowserTest, StorageRemovedFromDisk) {
 
 // TODO(crbug.com/840080, crbug.com/824533): Filesystem and
 // CacheStorage can't be deleted on exit correctly at the moment.
+// TODO(crbug.com/927312): LocalStorage deletion is flaky.
 const std::vector<std::string> kSessionOnlyStorageTestTypes{
-    "Cookie", "LocalStorage",
+    "Cookie",
+    // "LocalStorage",
     // "FileSystem",
     "SessionStorage", "IndexedDb", "WebSql", "ServiceWorker",
     // "CacheStorage",