9 string references to 'image_styles'

ImageAdminStylesUnitTest::testDefaultStyle in drupal-7.x/modules/image/image.test: Test to override, edit, then revert a style.
ImageAdminStylesUnitTest::testStyle in drupal-7.x/modules/image/image.test: General test to add a style, add/remove/edit effects to it, then delete it.
image_default_style_revert in drupal-7.x/modules/image/image.module: Reverts the changes made by users to a default image style.
image_schema in drupal-7.x/modules/image/image.install: Implements hook_schema().
image_style_delete in drupal-7.x/modules/image/image.module: Deletes an image style.
image_style_flush in drupal-7.x/modules/image/image.module: Flushes cached media for a style.
image_style_save in drupal-7.x/modules/image/image.module: Saves an image style.
image_update_7000 in drupal-7.x/modules/image/image.install: Install the schema for users upgrading from the contributed module.
image_update_7005 in drupal-7.x/modules/image/image.install: Add a column to the 'image_style' table to store administrative labels.