MDL-43241 JavaScript: Deprecate findChildNodes

lib/javascript-static.js

@@ -1101,8 +1101,14 @@ function findParentNode(el, elName, elClass, elId) {
     specified tag name, class, and id. All conditions must be met,
     but any can be ommitted.
     Doesn't examine children of matches.
+
+    @deprecated since Moodle 2.7 - please do not use this function any more.
+    @todo MDL-43242 This will be deleted in Moodle 2.9.
+    @see Y.all
 */
 function findChildNodes(start, tagName, elementClass, elementID, elementName) {
+    Y.log("findChildNodes() is deprecated. Please use Y.all instead.",
+            "warn", "javascript-static.js");
     var children = new Array();
     for (var i = 0; i < start.childNodes.length; i++) {
         var classfound = false;

lib/upgrade.txt

@@ -3,6 +3,7 @@ information provided here is intended especially for developers.
 
 === 2.7 ===
 
+DEPRECATIONS:
 * Abstract class \core\event\course_module_instances_list_viewed is deprecated now, use \core\event\instances_list_viewed instead.
 * mod_book\event\instances_list_viewed has been deprecated. Please use mod_book\event\course_module_instance_list_viewed instead.
 * mod_chat\event\instances_list_viewed has been deprecated. Please use mod_chat\event\course_module_instance_list_viewed instead.
@@ -10,6 +11,10 @@ information provided here is intended especially for developers.
 * mod_feedback\event\instances_list_viewed has been deprecated. Please use mod_feedback\event\course_module_instance_list_viewed instead.
 * mod_page\event\instances_list_viewed has been deprecated. Please use mod_page\event\course_module_instance_list_viewed instead.
 
+JavaSript:
+    * The findChildNodes global function has been deprecated. Y.all should
+      be used instead.
+
 === 2.6 ===
 
 * Use new methods from core_component class instead of get_core_subsystems(), get_plugin_types(),