WebUI: Vulcanize MD Settings at compile time.

chrome/browser/ui/webui/settings/md_settings_ui.cc

 // Copyright 2015 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/settings/md_settings_ui.h"
 
 #include <stddef.h>
 
 #include <string>
 
@@ skipping 172 matching lines @@
 #endif
 
   AddSettingsPageUIHandler(
       base::WrapUnique(AboutHandler::Create(html_source, profile)));
   AddSettingsPageUIHandler(
       base::WrapUnique(ResetSettingsHandler::Create(html_source, profile)));
 
   // Add the metrics handler to write uma stats.
   web_ui->AddMessageHandler(base::MakeUnique<MetricsHandler>());
 
+#if BUILDFLAG(USE_VULCANIZE)
+  html_source->AddResourcePath("crisper.js", IDR_MD_SETTINGS_CRISPER_JS);
+  html_source->SetDefaultResource(IDR_MD_SETTINGS_VULCANIZED_HTML);
+  html_source->UseGzip(std::unordered_set<std::string>());
+#else
   // Add all settings resources.
   for (size_t i = 0; i < kSettingsResourcesSize; ++i) {
     html_source->AddResourcePath(kSettingsResources[i].name,
                                  kSettingsResources[i].value);
   }
+  html_source->SetDefaultResource(IDR_SETTINGS_SETTINGS_HTML);
+#endif
 
   AddLocalizedStrings(html_source, profile);
-  html_source->SetDefaultResource(IDR_SETTINGS_SETTINGS_HTML);
 
   content::WebUIDataSource::Add(web_ui->GetWebContents()->GetBrowserContext(),
                                 html_source);
 }
 
 MdSettingsUI::~MdSettingsUI() {
 }
 
 void MdSettingsUI::AddSettingsPageUIHandler(
     std::unique_ptr<SettingsPageUIHandler> handler) {
@@ skipping 15 matching lines @@
   UMA_HISTOGRAM_TIMES("Settings.LoadDocumentTime.MD",
                       base::Time::Now() - load_start_time_);
 }
 
 void MdSettingsUI::DocumentOnLoadCompletedInMainFrame() {
   UMA_HISTOGRAM_TIMES("Settings.LoadCompletedTime.MD",
                       base::Time::Now() - load_start_time_);
 }
 
 }  // namespace settings