Revert of Remove WebElement::innerText.

Source/web/WebElement.cpp

 /*
  * Copyright (C) 2009 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 115 matching lines @@
     if (index >= attributeCount())
         return WebString();
     return constUnwrap<Element>()->attributes().at(index).value();
 }
 
 WebString WebElement::textContent()
 {
     return unwrap<Element>()->textContent();
 }
 
+WebString WebElement::innerText()
+{
+    return unwrap<Element>()->innerText();
+}
+
 WebString WebElement::computeInheritedLanguage() const
 {
     return WebString(constUnwrap<Element>()->computeInheritedLanguage());
 }
 
 void WebElement::requestFullScreen()
 {
     Element* element = unwrap<Element>();
     Fullscreen::from(element->document()).requestFullscreen(*element, Fullscreen::PrefixedRequest);
 }
@@ skipping 29 matching lines @@
     m_private = elem;
     return *this;
 }
 
 WebElement::operator PassRefPtrWillBeRawPtr<Element>() const
 {
     return toElement(m_private.get());
 }
 
 } // namespace blink