Context menu item to view original image when Data Saver is being used.

components/renderer_context_menu/render_view_context_menu_base.cc

Index: components/renderer_context_menu/render_view_context_menu_base.cc
diff --git a/components/renderer_context_menu/render_view_context_menu_base.cc b/components/renderer_context_menu/render_view_context_menu_base.cc
index d6472dfb3116061ea31f061015192332c58b6e7b..80f26bc644ed9f3966dd7aba33b8c2aac2fc91ee 100644
--- a/components/renderer_context_menu/render_view_context_menu_base.cc
+++ b/components/renderer_context_menu/render_view_context_menu_base.cc
@@ -378,6 +378,15 @@ void RenderViewContextMenuBase::OpenURL(
     const GURL& url, const GURL& referring_url,
     WindowOpenDisposition disposition,
     ui::PageTransition transition) {
+  OpenURLWithExtraHeaders(url, referring_url, disposition, transition, "");
+}
+
+void RenderViewContextMenuBase::OpenURLWithExtraHeaders(
+    const GURL& url,
+    const GURL& referring_url,
+    WindowOpenDisposition disposition,
+    ui::PageTransition transition,
+    const std::string& extra_headers) {
   content::Referrer referrer = content::Referrer::SanitizeForRequest(
       url,
       content::Referrer(referring_url.GetAsReferrer(),
@@ -386,8 +395,11 @@ void RenderViewContextMenuBase::OpenURL(
   if (params_.link_url == url && disposition != OFF_THE_RECORD)
     params_.custom_context.link_followed = url;
 
-  WebContents* new_contents = source_web_contents_->OpenURL(OpenURLParams(
-      url, referrer, disposition, transition, false));
+  OpenURLParams open_url_params(url, referrer, disposition, transition, false);
+  if (!extra_headers.empty())
+    open_url_params.extra_headers = extra_headers;
+
+  WebContents* new_contents = source_web_contents_->OpenURL(open_url_params);
   if (!new_contents)
     return;