Placeholder content direction should not affect INPUT/TEXTAREA direction.

third_party/WebKit/Source/core/html/HTMLElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004-2008, 2013, 2014 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2011 Motorola Mobility. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 719 matching lines @@
         TextDirection textDirection = determineDirectionality(inputElement->value(), &hasStrongDirectionality);
         if (strongDirectionalityTextNode)
             *strongDirectionalityTextNode = hasStrongDirectionality ? inputElement : 0;
         return textDirection;
     }
 
     Node* node = FlatTreeTraversal::firstChild(*this);
     while (node) {
         // Skip bdi, script, style and text form controls.
         if (equalIgnoringCase(node->nodeName(), "bdi") || isHTMLScriptElement(*node) || isHTMLStyleElement(*node)
-            || (node->isElementNode() && toElement(node)->isTextFormControl())) {
+            || (node->isElementNode() && toElement(node)->isTextFormControl())
+            || (node->isElementNode() && toElement(node)->shadowPseudoId() == "-webkit-input-placeholder")) {
             node = FlatTreeTraversal::nextSkippingChildren(*node, this);
             continue;
         }
 
         // Skip elements with valid dir attribute
         if (node->isElementNode()) {
             AtomicString dirAttributeValue = toElement(node)->fastGetAttribute(dirAttr);
             if (isValidDirAttribute(dirAttributeValue)) {
                 node = FlatTreeTraversal::nextSkippingChildren(*node, this);
                 continue;
@@ skipping 349 matching lines @@
 #ifndef NDEBUG
 
 // For use in the debugger
 void dumpInnerHTML(blink::HTMLElement*);
 
 void dumpInnerHTML(blink::HTMLElement* element)
 {
     printf("%s\n", element->innerHTML().ascii().data());
 }
 #endif