TinyMCE: include https://github.com/tinymce/tinymce/commit/85e22b58e9909f327afeed75dce81c41bf8cfd7dthat and quote one more use of "float". This is "reserved as future keyword by older ECMAScript specifications" according to https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Lexical_grammar and can throw a syntax error. See #28576.

git-svn-id: https://develop.svn.wordpress.org/trunk@29261 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/js/tinymce/tinymce.js

@@ -3465,7 +3465,7 @@ define("tinymce/dom/DomQuery", [
 		'readonly': 'readOnly'
 	};
 	var cssFix = {
-		float: 'cssFloat'
+		'float': 'cssFloat'
 	};
 
 	var attrHooks = {}, cssHooks = {};
@@ -4868,7 +4868,7 @@ define("tinymce/dom/DomQuery", [
 	}
 
 	if (Env.ie && Env.ie < 9) {
-		cssFix.float = 'styleFloat';
+		cssFix['float'] = 'styleFloat';
 
 		appendHooks(cssHooks, 'set', {
 			opacity: function(elm, value) {