MHTMLGenerationManager - add param

content/public/common/mhtml_generation_params.h

Index: content/public/common/mhtml_generation_params.h
diff --git a/content/public/common/mhtml_generation_params.h b/content/public/common/mhtml_generation_params.h
index 4b6635239f94935d1b89970952bdb767c94a71ff..22dea97c044cf4666037391c6d874bc9655e02f5 100644
--- a/content/public/common/mhtml_generation_params.h
+++ b/content/public/common/mhtml_generation_params.h
@@ -31,6 +31,9 @@ struct CONTENT_EXPORT MHTMLGenerationParams {
 
   // Removes popups that could obstruct the user's view of normal content.
   bool remove_popup_overlay = false;
+
+  // Run page problem detectors while generating MTHML if true.
+  bool use_page_problem_detectors = false;
 };
 
 }  // namespace content