Disable AppApiTest.AppProcessRedirectBack on Linux.

chrome/browser/extensions/app_process_apitest.cc

 // 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.
 
 #include "base/command_line.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/browser/extensions/extension_host.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 359 matching lines @@
             browser()->tab_strip_model()->GetWebContentsAt(2)->
                 GetRenderProcessHost());
 }
 
 // Tests that app process switching works properly in the following scenario:
 // 1. navigate to a page1 in the app
 // 2. page1 redirects to a page2 outside the app extent (ie, "/server-redirect")
 // 3. page2 redirects back to a page in the app
 // The final navigation should end up in the app process.
 // See http://crbug.com/61757
-// Flaky - see http://crbug.com/341898
-IN_PROC_BROWSER_TEST_F(AppApiTest, FLAKY_AppProcessRedirectBack) {
+// Flaky on Linux.  http://crbug.com/341898
+#if defined(OS_LINUX)
+#define MAYBE_AppProcessRedirectBack DISABLED_AppProcessRedirectBack
+#else
+#define MAYBE_AppProcessRedirectBack AppProcessRedirectBack
+#endif
+IN_PROC_BROWSER_TEST_F(AppApiTest, MAYBE_AppProcessRedirectBack) {
   host_resolver()->AddRule("*", "127.0.0.1");
   ASSERT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady());
 
   ASSERT_TRUE(LoadExtension(test_data_dir_.AppendASCII("app_process")));
 
   // Open two tabs in the app.
   GURL base_url = GetTestBaseURL("app_process");
 
   chrome::NewTab(browser());
   ui_test_utils::NavigateToURL(browser(), base_url.Resolve("path1/empty.html"));
@@ skipping 475 matching lines @@
   // Navigate the popup to another process outside the app.
   GURL non_app_url(base_url.Resolve("path3/empty.html"));
   ui_test_utils::NavigateToURL(active_browser_list->get(1), non_app_url);
   SiteInstance* new_instance = popup_contents->GetSiteInstance();
   EXPECT_NE(app_instance, new_instance);
 
   // It should still be in the same BrowsingInstance, allowing postMessage to
   // work.
   EXPECT_TRUE(app_instance->IsRelatedSiteInstance(new_instance));
 }