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

content/public/browser/web_ui_data_source.h

Index: content/public/browser/web_ui_data_source.h
diff --git a/content/public/browser/web_ui_data_source.h b/content/public/browser/web_ui_data_source.h
index 515146bd20c267f34a783e9b637b39199fe0a666..db659c36871604eb1e3b874f2bb84ea05307ab0a 100644
--- a/content/public/browser/web_ui_data_source.h
+++ b/content/public/browser/web_ui_data_source.h
@@ -5,6 +5,9 @@
 #ifndef CONTENT_PUBLIC_BROWSER_WEB_UI_DATA_SOURCE_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_UI_DATA_SOURCE_H_
 
+#include <map>
+#include <string>
+
 #include "base/callback.h"
 #include "base/strings/string16.h"
 #include "content/common/content_export.h"
@@ -72,6 +75,8 @@ class WebUIDataSource {
   // Allows a caller to add a filter for URL requests.
   virtual void SetRequestFilter(const HandleRequestCallback& callback) = 0;
 
+  virtual const std::map<std::string, int>& path_to_idr_map() const = 0;
+
   // The following map to methods on URLDataSource. See the documentation there.
   // NOTE: it's not acceptable to call DisableContentSecurityPolicy for new
   // pages, see URLDataSource::ShouldAddContentSecurityPolicy and talk to
@@ -85,6 +90,8 @@ class WebUIDataSource {
   virtual void OverrideContentSecurityPolicyChildSrc(
       const std::string& data) = 0;
   virtual void DisableDenyXFrameOptions() = 0;
+
+  virtual void AddPreloadHeader(const std::string& preload_header) = 0;
 };
 
 }  // namespace content