DO NOT COMMIT: hack hack hacking on preloading md-settings

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

Index: chrome/browser/ui/webui/settings/md_settings_ui.h
diff --git a/chrome/browser/ui/webui/settings/md_settings_ui.h b/chrome/browser/ui/webui/settings/md_settings_ui.h
index 6f49d402e08debbdd4f54e15c60ef26ba750007d..ed1ea1f7a791577d1cd93ee1a295977b33a67669 100644
--- a/chrome/browser/ui/webui/settings/md_settings_ui.h
+++ b/chrome/browser/ui/webui/settings/md_settings_ui.h
@@ -5,12 +5,16 @@
 #ifndef CHROME_BROWSER_UI_WEBUI_SETTINGS_MD_SETTINGS_UI_H_
 #define CHROME_BROWSER_UI_WEBUI_SETTINGS_MD_SETTINGS_UI_H_
 
+#include <set>
+#include <string>
 #include <unordered_set>
 
 #include "base/macros.h"
+//#include "base/memory/weak_ptr.h"
 #include "base/time/time.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_ui_controller.h"
+#include "content/public/browser/web_ui_data_source.h"
 
 class GURL;
 
@@ -38,11 +42,23 @@ class MdSettingsUI : public content::WebUIController,
  private:
   void AddSettingsPageUIHandler(SettingsPageUIHandler* handler);
 
+  bool RequestFilter(
+      const std::string& path,
+      const content::WebUIDataSource::GotDataCallback& callback);
+
+  void GatherPreloadUrls(const GURL& url, std::vector<GURL>* urls);
+
   // Weak references; all |handlers_| are owned by |web_ui()|.
   std::unordered_set<SettingsPageUIHandler*> handlers_;
 
   base::Time load_start_time_;
 
+  content::WebUIDataSource* html_source_;
+
+  //base::WeakPtrFactory<MdSettingsUI> weak_ptr_factory_;
+
+  std::string preloads_;
+
   DISALLOW_COPY_AND_ASSIGN(MdSettingsUI);
 };