Mark flaky test as flaky.

chrome/browser/extensions/content_script_apitest.cc

Index: chrome/browser/extensions/content_script_apitest.cc
diff --git a/chrome/browser/extensions/content_script_apitest.cc b/chrome/browser/extensions/content_script_apitest.cc
index cba4f1287f984c32fe6b119b4df824a80416e8d4..f6097ad932169ece74bcc87746d0e6d02e203a4c 100644
--- a/chrome/browser/extensions/content_script_apitest.cc
+++ b/chrome/browser/extensions/content_script_apitest.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 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.
 
@@ -80,8 +80,14 @@ IN_PROC_BROWSER_TEST_F(ExtensionApiTest, ContentScriptViewSource) {
   ASSERT_TRUE(RunExtensionTest("content_scripts/view_source")) << message_;
 }
 
+#if defined (OS_CHROMEOS)
+IN_PROC_BROWSER_TEST_F(
+    ExtensionApiTest,
+    FLAKY_ContentScriptStylesInjectedIntoExistingRenderers) {
+#else
 IN_PROC_BROWSER_TEST_F(
     ExtensionApiTest, ContentScriptStylesInjectedIntoExistingRenderers) {
+#endif
   ASSERT_TRUE(StartTestServer());
 
   ui_test_utils::WindowedNotificationObserver signal(