Calls Layout() explicitly when an icon is loaded.

Otherwise the layout manager doesn't recognize the change, so the added
image views won't appear on screen.

BUG=161094


Review URL: https://chromiumcodereview.appspot.com/12077016

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@179220 0039d316-1c4b-4281-b951-d872f2087c98

ui/message_center/notifier_settings.cc

@@ -63,6 +63,7 @@ class NotifierSettingsView::NotifierButton : public views::CustomButton,
       icon_view_->SetImage(icon);
       icon_view_->SetImageSize(gfx::Size(kSettingsIconSize, kSettingsIconSize));
     }
+    Layout();
     SchedulePaint();
   }