Mark SessionRestoreUITest.ShareProcessesOnRestore as flaky on Linux and Mac.

chrome/browser/sessions/session_restore_uitest.cc

 // Copyright (c) 2010 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 "base/file_path.h"
 #include "base/scoped_ptr.h"
 #include "base/string_number_conversions.h"
 #include "chrome/app/chrome_dll_resource.h"
 #include "chrome/browser/defaults.h"
@@ skipping 420 matching lines @@
   // First restore the settings so we can connect to the browser.
   include_testing_id_ = include_testing_id_orig;
   // Restore the session with 1 tab.
   QuitBrowserAndRestore(1);
 
   AssertOneWindowWithOneTab();
 
   ASSERT_EQ(url1_, GetActiveTabURL());
 }
 
+#if defined(OS_LINUX) || defined(OS_MACOSX)
+// Flaky, sometimes times out: http://crbug.com/52022
+#define MAYBE_ShareProcessesOnRestore FLAKY_ShareProcessesOnRestore
+#else
+#define MAYBE_ShareProcessesOnRestore ShareProcessesOnRestore
+#endif
 // Make sure after a restore the number of processes matches that of the number
 // of processes running before the restore. This creates a new tab so that
 // we should have two new tabs running.  (This test will pass in both
 // process-per-site and process-per-site-instance, because we treat the new tab
 // as a special case in process-per-site-instance so that it only ever uses one
 // process.)
-TEST_F(SessionRestoreUITest, ShareProcessesOnRestore) {
+TEST_F(SessionRestoreUITest, MAYBE_ShareProcessesOnRestore) {
   if (in_process_renderer()) {
     // No point in running this test in single process mode.
     return;
   }
 
   scoped_refptr<BrowserProxy> browser_proxy(automation()->GetBrowserWindow(0));
   ASSERT_TRUE(browser_proxy.get() != NULL);
   int tab_count;
   ASSERT_TRUE(browser_proxy->GetTabCount(&tab_count));
 
@@ skipping 22 matching lines @@
   ASSERT_TRUE(tab_proxy.get() != NULL);
   ASSERT_TRUE(tab_proxy->WaitForTabToBeRestored(action_max_timeout_ms()));
   tab_proxy = browser_proxy->GetTab(tab_count - 1);
   ASSERT_TRUE(tab_proxy.get() != NULL);
   ASSERT_TRUE(tab_proxy->WaitForTabToBeRestored(action_max_timeout_ms()));
 
   ASSERT_EQ(expected_process_count, GetBrowserProcessCount());
 }
 
 }  // namespace