Add a flag to require a user gesture to add an entry to the back/forward list.

third_party/WebKit/Source/web/WebSettingsImpl.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 544 matching lines @@
 void WebSettingsImpl::setPreferCompositingToLCDTextEnabled(bool enabled)
 {
     m_devToolsEmulator->setPreferCompositingToLCDTextEnabled(enabled);
 }
 
 void WebSettingsImpl::setMinimumAccelerated2dCanvasSize(int numPixels)
 {
     m_settings->setMinimumAccelerated2dCanvasSize(numPixels);
 }
 
+void WebSettingsImpl::setHistoryEntryRequiresUserGesture(bool enabled)
+{
+    m_settings->setHistoryEntryRequiresUserGesture(enabled);
+}
+
 void WebSettingsImpl::setHyperlinkAuditingEnabled(bool enabled)
 {
     m_settings->setHyperlinkAuditingEnabled(enabled);
 }
 
 void WebSettingsImpl::setAutoplayExperimentMode(const WebString& mode)
 {
     m_settings->setAutoplayExperimentMode(mode);
 }
 
@@ skipping 212 matching lines @@
 {
     m_settings->setV8CacheStrategiesForCacheStorage(static_cast<blink::V8CacheStrategiesForCacheStorage>(strategies));
 }
 
 void WebSettingsImpl::setViewportStyle(WebViewportStyle style)
 {
     m_devToolsEmulator->setViewportStyle(style);
 }
 
 } // namespace blink