Mark OmniboxViewTest.DeleteItem as flaky on Linux.

chrome/browser/ui/omnibox/omnibox_view_browsertest.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdio.h>
 
 #include "base/message_loop.h"
 #include "base/string16.h"
 #include "base/string_util.h"
 #include "base/time.h"
@@ skipping 1158 matching lines @@
 }
 
 IN_PROC_BROWSER_TEST_F(OmniboxViewTest, AcceptKeywordBySpace) {
   AcceptKeywordBySpaceTest();
 }
 
 IN_PROC_BROWSER_TEST_F(OmniboxViewTest, NonSubstitutingKeywordTest) {
   NonSubstitutingKeywordTest();
 }
 
-#if defined(OS_MACOSX)
-// Flaky on Mac 10.6 http://crbug.com/84420
+#if defined(OS_POSIX)
+// Flaky on Mac 10.6, Linux http://crbug.com/84420
 IN_PROC_BROWSER_TEST_F(OmniboxViewTest, FLAKY_DeleteItem) {
 #else
 IN_PROC_BROWSER_TEST_F(OmniboxViewTest, DeleteItem) {
 #endif
   DeleteItemTest();
 }
 
 IN_PROC_BROWSER_TEST_F(OmniboxViewTest, TabMoveCursorToEnd) {
   TabMoveCursorToEndTest();
 }
@@ skipping 207 matching lines @@
                        PersistKeywordModeOnTabSwitch) {
   PersistKeywordModeOnTabSwitch();
 }
 
 IN_PROC_BROWSER_TEST_F(OmniboxViewViewsTest,
                        CtrlKeyPressedWithInlineAutocompleteTest) {
   CtrlKeyPressedWithInlineAutocompleteTest();
 }
 
 #endif