OOPIFs: Deduplicating MHTML parts across frames.

content/renderer/render_frame_impl.h

Index: content/renderer/render_frame_impl.h
diff --git a/content/renderer/render_frame_impl.h b/content/renderer/render_frame_impl.h
index 7e6136ca9c84ae918904db259cca924232576f58..05e80f8b11148562fa4eb53cd6400d37f97299f5 100644
--- a/content/renderer/render_frame_impl.h
+++ b/content/renderer/render_frame_impl.h
@@ -58,6 +58,7 @@ class GURL;
 class TransportDIB;
 struct FrameMsg_NewFrame_WidgetParams;
 struct FrameMsg_PostMessage_Params;
+struct FrameMsg_SerializeAsMHTML_Params;
 struct FrameMsg_TextTrackSettings_Params;
 
 namespace blink {
@@ -771,12 +772,7 @@ class CONTENT_EXPORT RenderFrameImpl
       std::vector<GURL> original_urls,
       std::vector<base::FilePath> equivalent_local_paths,
       base::FilePath local_directory_path);
-  void OnSerializeAsMHTML(
-      int job_id,
-      IPC::PlatformFileForTransit file_for_transit,
-      const std::string& mhtml_boundary_marker,
-      const std::map<int, std::string>& frame_routing_id_to_content_id,
-      bool is_last_frame);
+  void OnSerializeAsMHTML(const FrameMsg_SerializeAsMHTML_Params& params);
 
   // Requests that the browser process navigates to |url|. If
   // |is_history_navigation_in_new_child| is true, the browser process should