Disable info bar animations during automated testing.

components/infobars/core/infobar_manager.cc

Index: components/infobars/core/infobar_manager.cc
diff --git a/components/infobars/core/infobar_manager.cc b/components/infobars/core/infobar_manager.cc
index 06d1b2861c9f8e5a6376aaaec1a60dd168e3ab2e..1de3cbbd9cb3215f0d402877d15bb4561d3cf4b0 100644
--- a/components/infobars/core/infobar_manager.cc
+++ b/components/infobars/core/infobar_manager.cc
@@ -100,8 +100,7 @@ void InfoBarManager::RemoveObserver(Observer* obs) {
   observer_list_.RemoveObserver(obs);
 }
 
-InfoBarManager::InfoBarManager()
-    : infobars_enabled_(true) {
+InfoBarManager::InfoBarManager() {
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kDisableInfoBars))
     infobars_enabled_ = false;