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

chrome/browser/ui/prefs/prefs_tab_helper.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/prefs/prefs_tab_helper.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <set>
@@ skipping 55 matching lines @@
 
 // The list of prefs we want to observe.
 const char* kPrefsToObserve[] = {
 #if defined(ENABLE_EXTENSIONS)
   prefs::kAnimationPolicy,
 #endif
   prefs::kDataSaverEnabled,
   prefs::kDefaultCharset,
   prefs::kDisable3DAPIs,
   prefs::kEnableHyperlinkAuditing,
-  prefs::kWebKitAllowDisplayingInsecureContent,
   prefs::kWebKitAllowRunningInsecureContent,
   prefs::kWebKitDefaultFixedFontSize,
   prefs::kWebKitDefaultFontSize,
   prefs::kWebKitDomPasteEnabled,
 #if defined(OS_ANDROID)
   prefs::kWebKitFontScaleFactor,
   prefs::kWebKitForceEnableZoom,
   prefs::kWebKitPasswordEchoEnabled,
 #endif
   prefs::kWebKitJavascriptCanOpenWindowsAutomatically,
@@ skipping 429 matching lines @@
   registry->RegisterBooleanPref(prefs::kWebKitPluginsEnabled,
                                 pref_defaults.plugins_enabled);
   registry->RegisterBooleanPref(prefs::kWebKitDomPasteEnabled,
                                 pref_defaults.dom_paste_enabled);
   registry->RegisterBooleanPref(prefs::kWebKitTextAreasAreResizable,
                                 pref_defaults.text_areas_are_resizable);
   registry->RegisterBooleanPref(prefs::kWebkitTabsToLinks,
                                 pref_defaults.tabs_to_links);
   registry->RegisterBooleanPref(prefs::kWebKitAllowRunningInsecureContent,
                                 false);
-  registry->RegisterBooleanPref(prefs::kWebKitAllowDisplayingInsecureContent,
-                                true);
   registry->RegisterBooleanPref(prefs::kEnableReferrers, true);
 #if defined(OS_ANDROID)
   registry->RegisterDoublePref(prefs::kWebKitFontScaleFactor, 1.0);
   registry->RegisterBooleanPref(prefs::kWebKitForceEnableZoom,
                                 pref_defaults.force_enable_zoom);
   registry->RegisterBooleanPref(prefs::kWebKitPasswordEchoEnabled,
                                 pref_defaults.password_echo_enabled);
 #endif
   registry->RegisterStringPref(
       prefs::kAcceptLanguages,
@@ skipping 138 matching lines @@
   }
 }
 
 void PrefsTabHelper::OnWebPrefChanged(const std::string& pref_name) {
 #if !defined(OS_ANDROID)
   OnFontFamilyPrefChanged(pref_name);
 #endif
 
   web_contents_->GetRenderViewHost()->OnWebkitPreferencesChanged();
 }