Docs: Promote many bool types to true or false where only that value is used.

See #51800


git-svn-id: https://develop.svn.wordpress.org/trunk@49927 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/class-wp-image-editor.php

@@ -64,7 +64,7 @@ abstract class WP_Image_Editor {
 	 * @since 3.5.0
 	 * @abstract
 	 *
-	 * @return bool|WP_Error True if loaded; WP_Error on failure.
+	 * @return true|WP_Error True if loaded; WP_Error on failure.
 	 */
 	abstract public function load();
 
@@ -93,7 +93,7 @@ abstract class WP_Image_Editor {
 	 * @param int|null $max_w Image width.
 	 * @param int|null $max_h Image height.
 	 * @param bool     $crop
-	 * @return bool|WP_Error
+	 * @return true|WP_Error
 	 */
 	abstract public function resize( $max_w, $max_h, $crop = false );
 
@@ -129,7 +129,7 @@ abstract class WP_Image_Editor {
 	 * @param int  $dst_w   Optional. The destination width.
 	 * @param int  $dst_h   Optional. The destination height.
 	 * @param bool $src_abs Optional. If the source crop points are absolute.
-	 * @return bool|WP_Error
+	 * @return true|WP_Error
 	 */
 	abstract public function crop( $src_x, $src_y, $src_w, $src_h, $dst_w = null, $dst_h = null, $src_abs = false );
 
@@ -140,7 +140,7 @@ abstract class WP_Image_Editor {
 	 * @abstract
 	 *
 	 * @param float $angle
-	 * @return bool|WP_Error
+	 * @return true|WP_Error
 	 */
 	abstract public function rotate( $angle );
 
@@ -152,7 +152,7 @@ abstract class WP_Image_Editor {
 	 *
 	 * @param bool $horz Flip along Horizontal Axis
 	 * @param bool $vert Flip along Vertical Axis
-	 * @return bool|WP_Error
+	 * @return true|WP_Error
 	 */
 	abstract public function flip( $horz, $vert );
 
@@ -163,7 +163,7 @@ abstract class WP_Image_Editor {
 	 * @abstract
 	 *
 	 * @param string $mime_type The mime type of the image.
-	 * @return bool|WP_Error True on success, WP_Error object or false on failure.
+	 * @return true|WP_Error True on success, WP_Error object on failure.
 	 */
 	abstract public function stream( $mime_type = null );