6 theme calls to theme_feed_icon()

aggregator_page_sources in drupal/core/modules/aggregator/aggregator.pages.inc
Page callback: Displays all the feeds used by the aggregator.
drupal_add_feed in drupal/core/includes/common.inc
Adds a feed URL for the current page.
hook_block_view in drupal/core/modules/block/block.api.php
Return a rendered or renderable view of a block.
node_block_view in drupal/core/modules/node/node.module
Implements hook_block_view().
Rss::attach_to in drupal/core/modules/views/lib/Drupal/views/Plugin/views/style/Rss.php
template_preprocess_aggregator_feed_source in drupal/core/modules/aggregator/aggregator.pages.inc
Processes variables for aggregator-feed-source.tpl.php.