Increase timer slack for several browser threads.

chrome/browser/browser_process_impl.cc

Index: chrome/browser/browser_process_impl.cc
diff --git a/chrome/browser/browser_process_impl.cc b/chrome/browser/browser_process_impl.cc
index 0abb31784b75465a485e54048e602a183f695aec..a36ac9fa8ed0e36a3cdbc28cb6ed078173008095 100644
--- a/chrome/browser/browser_process_impl.cc
+++ b/chrome/browser/browser_process_impl.cc
@@ -830,7 +830,9 @@ void BrowserProcessImpl::CreateWatchdogThread() {
   created_watchdog_thread_ = true;
 
   scoped_ptr<WatchDogThread> thread(new WatchDogThread());
-  if (!thread->Start())
+  base::Thread::Options options;
+  options.timer_slack = base::TIMER_SLACK_MAXIMUM;
+  if (!thread->StartWithOptions(options))
     return;
   watchdog_thread_.swap(thread);
 }