Remove the allow-displaying-mixed-content setting from Blink.

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 574 matching lines @@
 void WebSettingsImpl::setCaretBrowsingEnabled(bool enabled)
 {
     m_settings->setCaretBrowsingEnabled(enabled);
 }
 
 void WebSettingsImpl::setValidationMessageTimerMagnification(int newValue)
 {
     m_settings->setValidationMessageTimerMagnification(newValue);
 }
 
-void WebSettingsImpl::setAllowDisplayOfInsecureContent(bool enabled)
-{
-    m_settings->setAllowDisplayOfInsecureContent(enabled);
-}
-
 void WebSettingsImpl::setAllowRunningOfInsecureContent(bool enabled)
 {
     m_settings->setAllowRunningOfInsecureContent(enabled);
 }
 
 void WebSettingsImpl::setDisableReadingFromCanvas(bool enabled)
 {
     m_settings->setDisableReadingFromCanvas(enabled);
 }
 
@@ skipping 192 matching lines @@
 {
     m_settings->setV8CacheStrategiesForCacheStorage(static_cast<blink::V8CacheStrategiesForCacheStorage>(strategies));
 }
 
 void WebSettingsImpl::setViewportStyle(WebViewportStyle style)
 {
     m_devToolsEmulator->setViewportStyle(style);
 }
 
 } // namespace blink