Remove about:srcdoc url conversion.

chrome/browser/ui/webui/options/options_ui.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/webui/options/options_ui.h"
 
 #include <algorithm>
 #include <utility>
 #include <vector>
 
@@ skipping 488 matching lines @@
     entry->SetString("title", match.description);
     entry->SetString("displayURL", match.contents);
     entry->SetString("url", match.destination_url.spec());
     suggestions->Append(std::move(entry));
   }
 }
 
 void OptionsUI::DidStartProvisionalLoadForFrame(
     content::RenderFrameHost* render_frame_host,
     const GURL& validated_url,
-    bool is_error_page,
-    bool is_iframe_srcdoc) {
+    bool is_error_page) {
   load_start_time_ = base::Time::Now();
   if (render_frame_host->GetRenderViewHost() ==
           web_ui()->GetWebContents()->GetRenderViewHost() &&
       validated_url.host() == chrome::kChromeUISettingsFrameHost) {
     for (size_t i = 0; i < handlers_.size(); ++i)
       handlers_[i]->PageLoadStarted();
   }
 }
 
 void OptionsUI::DocumentLoadedInFrame(
@@ skipping 48 matching lines @@
   // Add only if handler's service is enabled.
   if (handler->IsEnabled()) {
     // Add handler to the list and also pass the ownership.
     web_ui()->AddMessageHandler(handler.release());
     handler_raw->GetLocalizedValues(localized_strings);
     handlers_.push_back(handler_raw);
   }
 }
 
 }  // namespace options