Stop inserting placeholders for TextArea and Input elements.

Source/WebCore/editing/TextIterator.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2005 Alexey Proskuryakov.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 721 matching lines @@
     RenderTable* t = rc->table();
     return t && (t->cellBefore(rc) || t->cellAbove(rc));
 }
 
 static bool shouldEmitNewlineForNode(Node* node, bool emitsOriginalText)
 {
     RenderObject* renderer = node->renderer();
 
     if (renderer ? !renderer->isBR() : !node->hasTagName(brTag))
         return false;
-    return emitsOriginalText || !(node->isInShadowTree() && node->shadowHost()->toInputElement());
+    return emitsOriginalText;
 }
 
 static bool shouldEmitNewlinesBeforeAndAfterNode(Node* node)
 {
     // Block flow (versus inline flow) is represented by having
     // a newline both before and after the element.
     RenderObject* r = node->renderer();
     if (!r) {
         return (node->hasTagName(blockquoteTag)
                 || node->hasTagName(ddTag)
@@ skipping 1826 matching lines @@
         if (!matchLength)
             return collapsedToBoundary(range, !(options & Backwards));
     }
 
     // Then, find the document position of the start and the end of the text.
     CharacterIterator computeRangeIterator(range, TextIteratorEntersTextControls);
     return characterSubrange(computeRangeIterator, matchStart, matchLength);
 }
 
 }