make input type="search" RTL direction aware

Source/core/html/forms/SearchInputType.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 77 matching lines @@
 }
 
 void SearchInputType::createShadowSubtree()
 {
     TextFieldInputType::createShadowSubtree();
     Element* container = containerElement();
     Element* viewPort = element().userAgentShadowRoot()->getElementById(ShadowElementNames::editingViewPort());
     ASSERT(container);
     ASSERT(viewPort);
 
-    container->insertBefore(SearchFieldDecorationElement::create(element().document()), viewPort);
-    container->insertBefore(SearchFieldCancelButtonElement::create(element().document()), viewPort->nextSibling());
+    AtomicString dirAttributeValue = element().fastGetAttribute(dirAttr);

[tkent, 2013/10/28 10:17:09]

This works only for <input type=search dir=rtl>, and doesn't work for <span
dir=rtl><input type=search></span>.

You should have removed the following ruleset in Source/css/html.css, and didn't
need to update any C++ code.
Anyway, such change doesn't work well on OSX.  We need a decision.

+    if (dirAttributeValue.isEmpty() || equalIgnoringCase(dirAttributeValue, "ltr")) {
+        container->insertBefore(SearchFieldDecorationElement::create(element().document()), viewPort);
+        container->insertBefore(SearchFieldCancelButtonElement::create(element().document()), viewPort->nextSibling());
+    } else {
+        container->insertBefore(SearchFieldCancelButtonElement::create(element().document()), viewPort);
+        container->insertBefore(SearchFieldDecorationElement::create(element().document()), viewPort->nextSibling());
+    }
 }
 
 void SearchInputType::handleKeydownEvent(KeyboardEvent* event)
 {
     if (element().isDisabledOrReadOnly()) {
         TextFieldInputType::handleKeydownEvent(event);
         return;
     }
 
     const String& key = event->keyIdentifier();
@@ skipping 65 matching lines @@
     else
         button->removeInlineStyleProperty(CSSPropertyVisibility);
 }
 
 bool SearchInputType::supportsInputModeAttribute() const
 {
     return true;
 }
 
 } // namespace WebCore