Add test for ProcessSingleton hung rendezvous case.

chrome/browser/chrome_process_finder_win.h

Index: chrome/browser/chrome_process_finder_win.h
diff --git a/chrome/browser/chrome_process_finder_win.h b/chrome/browser/chrome_process_finder_win.h
index bc5c81f027a540470a94306456179dba3e6ae98b..99f31b5fc72609d54222fbbd0dd7dbceb6cb4c45 100644
--- a/chrome/browser/chrome_process_finder_win.h
+++ b/chrome/browser/chrome_process_finder_win.h
@@ -29,6 +29,9 @@ HWND FindRunningChromeWindow(const base::FilePath& user_data_dir);
 NotifyChromeResult AttemptToNotifyRunningChrome(HWND remote_window,
                                                 bool fast_start);
 
+// Changes the notification timeout to |new_timeout|, returns the old timeout.
+int SetNotificationTimeoutInSecondsForTesting(int new_timeout);

[sky, 2015/03/11 19:15:51]

Make this take a TimeDelta so that units are clearer and its less error prone.

[Sigurður Ásgeirsson, 2015/03/11 20:15:31]

Done.

+
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_CHROME_PROCESS_FINDER_WIN_H_