Fix handling of external protocols with PlzNavigate.

content/common/url_schemes.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 "content/common/url_schemes.h"
 
 #include <string.h>
 
 #include <algorithm>
 
@@ skipping 50 matching lines @@
   for (auto& scheme : schemes.no_access_schemes)
     url::AddNoAccessScheme(scheme.c_str());
 
   schemes.cors_enabled_schemes.push_back(kChromeUIScheme);
   for (auto& scheme : schemes.cors_enabled_schemes)
     url::AddCORSEnabledScheme(scheme.c_str());
 
   for (auto& scheme : schemes.csp_bypassing_schemes)
     url::AddCSPBypassingScheme(scheme.c_str());
 
+  for (auto& scheme : schemes.empty_document_schemes)
+    url::AddEmptyDocumentScheme(scheme.c_str());
+
   // Prevent future modification of the scheme lists. This is to prevent
   // accidental creation of data races in the program. Add*Scheme aren't
   // threadsafe so must be called when GURL isn't used on any other thread. This
   // is really easy to mess up, so we say that all calls to Add*Scheme in Chrome
   // must be inside this function.
   if (lock_schemes)
     url::LockSchemeRegistries();
 
   // Combine the default savable schemes with the additional ones given.
   delete savable_schemes;
@@ skipping 19 matching lines @@
 
 const std::vector<GURL>& GetSecureOrigins() {
   return *secure_origins;
 }
 
 const std::vector<std::string>& GetServiceWorkerSchemes() {
   return *service_worker_schemes;
 }
 
 }  // namespace content