Remove ScrollRestoration runtime flag (status=stable)

third_party/WebKit/Source/core/frame/History.cpp

 /*
  * Copyright (C) 2007 Apple 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:
  * 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 75 matching lines @@
 
     if (HistoryItem* historyItem = m_frame->loader().currentItem())
         return historyItem->stateObject();
 
     return 0;
 }
 
 void History::setScrollRestoration(const String& value)
 {
     ASSERT(value == "manual"  || value == "auto");
-    if (!m_frame || !m_frame->loader().client() || !RuntimeEnabledFeatures::scrollRestorationEnabled())
+    if (!m_frame || !m_frame->loader().client())
         return;
 
     HistoryScrollRestorationType scrollRestoration = value == "manual" ? ScrollRestorationManual : ScrollRestorationAuto;
     if (scrollRestoration == scrollRestorationInternal())
         return;
 
     if (HistoryItem* historyItem = m_frame->loader().currentItem()) {
         historyItem->setScrollRestorationType(scrollRestoration);
         m_frame->loader().client()->didUpdateCurrentHistoryItem();
     }
 }
 
 String History::scrollRestoration()
 {
     return scrollRestorationInternal() == ScrollRestorationManual ? "manual" : "auto";
 }
 
 HistoryScrollRestorationType History::scrollRestorationInternal() const
 {
-    if (m_frame && RuntimeEnabledFeatures::scrollRestorationEnabled()) {
+    if (m_frame) {
         if (HistoryItem* historyItem = m_frame->loader().currentItem())
             return historyItem->scrollRestorationType();
     }
 
     return ScrollRestorationAuto;
 }
 
 bool History::stateChanged() const
 {
     return m_lastStateObjectRequested != stateInternal();
@@ skipping 84 matching lines @@
     if (!canChangeToUrl(fullURL, m_frame->document()->getSecurityOrigin(), m_frame->document()->url())) {
         // We can safely expose the URL to JavaScript, as a) no redirection takes place: JavaScript already had this URL, b) JavaScript can only access a same-origin History object.
         exceptionState.throwSecurityError("A history state object with URL '" + fullURL.elidedString() + "' cannot be created in a document with origin '" + m_frame->document()->getSecurityOrigin()->toString() + "' and URL '" + m_frame->document()->url().elidedString() + "'.");
         return;
     }
 
     m_frame->loader().updateForSameDocumentNavigation(fullURL, SameDocumentNavigationHistoryApi, std::move(data), restorationType, type, m_frame->document());
 }
 
 } // namespace blink