Remove InsecureContentInfobarDelegate, which has been broken for a while

chrome/browser/prefs/command_line_pref_store.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/prefs/command_line_pref_store.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <utility>
@@ skipping 47 matching lines @@
       { switches::kDisable3DAPIs, prefs::kDisable3DAPIs, true },
       { switches::kEnableCloudPrintProxy, prefs::kCloudPrintProxyEnabled,
           true },
       { switches::kAllowOutdatedPlugins, prefs::kPluginsAllowOutdated, true },
       { switches::kAlwaysAuthorizePlugins, prefs::kPluginsAlwaysAuthorize,
           true },
       { switches::kNoPings, prefs::kEnableHyperlinkAuditing, false },
       { switches::kNoReferrers, prefs::kEnableReferrers, false },
       { switches::kAllowRunningInsecureContent,
         prefs::kWebKitAllowRunningInsecureContent, true },
-      { switches::kNoDisplayingInsecureContent,
-        prefs::kWebKitAllowDisplayingInsecureContent, false },
       { switches::kAllowCrossOriginAuthPrompt,
         prefs::kAllowCrossOriginAuthPrompt, true },
       { switches::kDisablePrintPreview, prefs::kPrintPreviewDisabled, true },
 #if defined(OS_CHROMEOS)
       { chromeos::switches::kEnableTouchpadThreeFingerClick,
           prefs::kEnableTouchpadThreeFingerClick, true },
       { ash::switches::kAshEnableUnifiedDesktop,
           prefs::kUnifiedDesktopEnabledByDefault, true },
 #endif
       { switches::kDisableAsyncDns, prefs::kBuiltInDnsClientEnabled, false },
@@ skipping 120 matching lines @@
   }
 }
 
 void CommandLinePrefStore::ApplyBackgroundModeSwitches() {
   if (command_line_->HasSwitch(switches::kDisableExtensions)) {
     SetValue(prefs::kBackgroundModeEnabled,
              base::WrapUnique(new base::FundamentalValue(false)),
              WriteablePrefStore::DEFAULT_PREF_WRITE_FLAGS);
   }
 }