@NonNull
        public Builder setActionButton(@NonNull Bitmap icon, @NonNull String description,
                @NonNull PendingIntent pendingIntent) {
            return setActionButton(icon, description, pendingIntent, false);
        }
Sets the action button that is displayed in the Toolbar with default tinting behavior.

@see CustomTabsIntent.Builder#setActionButton(
Bitmap, String, PendingIntent, boolean)
customtabs/src/android/support/customtabs/CustomTabsIntent.java