Disable tray override feature.

Causing failures in browser_tests.

R=rmsousa@chromium.org
NOTRY=true
BUG=NONE

Review URL: https://codereview.chromium.org/256763005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@266298 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/ui/views/message_center/web_notification_tray.cc

@@ -351,12 +351,6 @@ void WebNotificationTray::CreateStatusIcon(const gfx::ImageSkia& image,
 
   status_icon_->AddObserver(this);
   AddQuietModeMenu(status_icon_);
-#if defined(OS_WIN)
-  if (did_force_tray_visible_.get() && !did_force_tray_visible_->GetValue()) {
-    EnforceStatusIconVisible();
-    did_force_tray_visible_->SetValue(true);
-  }
-#endif
 }
 
 void WebNotificationTray::DestroyStatusIcon() {