make input type="search" RTL direction aware

LayoutTests/fast/forms/resources/common.js

 function $(id) {
     return document.getElementById(id);
 }
 
 function createFormControlDataSet() {
     // A list of labelable elements resides in http://www.whatwg.org/specs/web-apps/current-work/multipage/forms.html#category-label
     var formControlClassNames = [
         'HTMLButtonElement',
         'HTMLDataListElement',
         'HTMLFieldSetElement',
@@ skipping 84 matching lines @@
     return rect;
 }
 
 function searchCancelButtonPosition(element) {
     var pos = {};
     pos.x = element.offsetLeft + element.offsetWidth - 9;
     pos.y = element.offsetTop + element.offsetHeight / 2;
     return pos;
 }
 
+function searchCancelButtonPositionRTL(element) {
+    var pos = {};
+    pos.x = element.offsetLeft + 9;
+    pos.y = element.offsetTop + element.offsetHeight / 2;
+    return pos;
+}
+
 function mouseMoveToIndexInListbox(index, listboxId) {
     var listbox = document.getElementById(listboxId);
     var itemHeight = Math.floor(listbox.offsetHeight / listbox.size);
     var border = 1;
     var y = border + index * itemHeight;
     if (window.eventSender)
         eventSender.mouseMoveTo(listbox.offsetLeft + border, listbox.offsetTop + y - window.pageYOffset);
 }
 
 function getUserAgentShadowTextContent(element) {
@@ skipping 57 matching lines @@
     if (!window.internals)
         return null;
     var node = root;
     while (node) {
         if (node.nodeType === Node.ELEMENT_NODE && internals.shadowPseudoId(node) === pseudoId)
             return node;
         node = traverseNextNode(node, root);
     }
     return null;
 }