Remove "Show saved copy" button from error page

chrome/renderer/net/net_error_page_controller.cc

Index: chrome/renderer/net/net_error_page_controller.cc
diff --git a/chrome/renderer/net/net_error_page_controller.cc b/chrome/renderer/net/net_error_page_controller.cc
index be4aae4ab7281a301c0012c01897704a15b34d6a..1942b4954ce40d139dcba27f0f640b67d85aac4c 100644
--- a/chrome/renderer/net/net_error_page_controller.cc
+++ b/chrome/renderer/net/net_error_page_controller.cc
@@ -47,10 +47,6 @@ bool NetErrorPageController::ShowOfflinePagesButtonClick() {
   return ButtonClick(error_page::NetErrorHelperCore::SHOW_OFFLINE_PAGES_BUTTON);
 }
 
-bool NetErrorPageController::ShowOfflineCopyButtonClick() {
-  return ButtonClick(error_page::NetErrorHelperCore::SHOW_OFFLINE_COPY_BUTTON);
-}
-
 bool NetErrorPageController::ReloadButtonClick() {
   return ButtonClick(error_page::NetErrorHelperCore::RELOAD_BUTTON);
 }
@@ -102,8 +98,6 @@ gin::ObjectTemplateBuilder NetErrorPageController::GetObjectTemplateBuilder(
                  &NetErrorPageController::ShowSavedCopyButtonClick)
       .SetMethod("showOfflinePagesButtonClick",
                  &NetErrorPageController::ShowOfflinePagesButtonClick)
-      .SetMethod("showOfflineCopyButtonClick",
-                 &NetErrorPageController::ShowOfflineCopyButtonClick)
       .SetMethod("reloadButtonClick",
                  &NetErrorPageController::ReloadButtonClick)
       .SetMethod("detailsButtonClick",