Move unique name generation and tracking into //content.

third_party/WebKit/Source/web/WebHistoryItem.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 32 matching lines @@
 #include "wtf/text/StringHash.h"
 
 namespace blink {
 
 void WebHistoryItem::initialize() {
   m_private = HistoryItem::create();
 }
 
 void WebHistoryItem::reset() {
   m_private.reset();
+  m_target.reset();
 }
 
 void WebHistoryItem::assign(const WebHistoryItem& other) {
   m_private = other.m_private;
+  m_target = other.m_target;
 }
 
 WebString WebHistoryItem::urlString() const {
   return m_private->urlString();
 }
 
 void WebHistoryItem::setURLString(const WebString& url) {
   m_private->setURLString(KURL(ParsedURLString, url).getString());
 }
 
 WebString WebHistoryItem::referrer() const {
   return m_private->referrer().referrer;
 }
 
 WebReferrerPolicy WebHistoryItem::getReferrerPolicy() const {
   return static_cast<WebReferrerPolicy>(m_private->referrer().referrerPolicy);
 }
 
 void WebHistoryItem::setReferrer(const WebString& referrer,
                                  WebReferrerPolicy referrerPolicy) {
   m_private->setReferrer(
       Referrer(referrer, static_cast<ReferrerPolicy>(referrerPolicy)));
 }
 
-WebString WebHistoryItem::target() const {
-  return m_private->target();
+const WebString& WebHistoryItem::target() const {
+  return m_target;
 }
 
 void WebHistoryItem::setTarget(const WebString& target) {
-  m_private->setTarget(target);
+  m_target = target;
 }
 
 WebFloatPoint WebHistoryItem::visualViewportScrollOffset() const {
   ScrollOffset offset = m_private->visualViewportScrollOffset();
   return WebFloatPoint(offset.width(), offset.height());
 }
 
 void WebHistoryItem::setVisualViewportScrollOffset(
     const WebFloatPoint& scrollOffset) {
   m_private->setVisualViewportScrollOffset(toScrollOffset(scrollOffset));
@@ skipping 115 matching lines @@
 WebHistoryItem& WebHistoryItem::operator=(HistoryItem* item) {
   m_private = item;
   return *this;
 }
 
 WebHistoryItem::operator HistoryItem*() const {
   return m_private.get();
 }
 
 }  // namespace blink