diff --git a/shell/browser/extensions/api/resources_private/resources_private_api.cc b/shell/browser/extensions/api/resources_private/resources_private_api.cc
index c352112ae2c2..e6246ad8be72 100644
--- a/shell/browser/extensions/api/resources_private/resources_private_api.cc
+++ b/shell/browser/extensions/api/resources_private/resources_private_api.cc
@@ -9,6 +9,7 @@
 
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
+#include "chrome/browser/pdf/pdf_extension_util.h"
 #include "chrome/common/extensions/api/resources_private.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/strings/grit/components_strings.h"
@@ -30,45 +31,6 @@
 
 namespace extensions {
 
-namespace {
-
-void AddStringsForPdf(base::Value::Dict* dict) {
-#if BUILDFLAG(ENABLE_PDF)
-  static constexpr webui::LocalizedString kPdfResources[] = {
-      {"passwordDialogTitle", IDS_PDF_PASSWORD_DIALOG_TITLE},
-      {"passwordPrompt", IDS_PDF_NEED_PASSWORD},
-      {"passwordSubmit", IDS_PDF_PASSWORD_SUBMIT},
-      {"thumbnailPageAriaLabel", IDS_PDF_THUMBNAIL_PAGE_ARIA_LABEL},
-      {"passwordInvalid", IDS_PDF_PASSWORD_INVALID},
-      {"pageLoading", IDS_PDF_PAGE_LOADING},
-      {"pageLoadFailed", IDS_PDF_PAGE_LOAD_FAILED},
-      {"errorDialogTitle", IDS_PDF_ERROR_DIALOG_TITLE},
-      {"pageReload", IDS_PDF_PAGE_RELOAD_BUTTON},
-      {"bookmarks", IDS_PDF_BOOKMARKS},
-      {"labelPageNumber", IDS_PDF_LABEL_PAGE_NUMBER},
-      {"tooltipDownload", IDS_PDF_TOOLTIP_DOWNLOAD},
-      {"tooltipPrint", IDS_PDF_TOOLTIP_PRINT},
-      {"tooltipFitToPage", IDS_PDF_TOOLTIP_FIT_PAGE},
-      {"tooltipFitToWidth", IDS_PDF_TOOLTIP_FIT_WIDTH},
-      {"tooltipZoomIn", IDS_PDF_TOOLTIP_ZOOM_IN},
-      {"tooltipZoomOut", IDS_PDF_TOOLTIP_ZOOM_OUT},
-  };
-  for (const auto& resource : kPdfResources)
-    dict->Set(resource.name, l10n_util::GetStringUTF16(resource.id));
-
-  dict->Set("presetZoomFactors", zoom::GetPresetZoomFactorsAsJSON());
-#endif  // BUILDFLAG(ENABLE_PDF)
-}
-
-void AddAdditionalDataForPdf(base::Value::Dict* dict) {
-#if BUILDFLAG(ENABLE_PDF)
-  dict->Set("pdfAnnotationsEnabled", base::Value(false));
-  dict->Set("printingEnabled", base::Value(true));
-#endif  // BUILDFLAG(ENABLE_PDF)
-}
-
-}  // namespace
-
 namespace get_strings = api::resources_private::GetStrings;
 
 ResourcesPrivateGetStringsFunction::ResourcesPrivateGetStringsFunction() =
@@ -86,8 +48,11 @@ ExtensionFunction::ResponseAction ResourcesPrivateGetStringsFunction::Run() {
 
   switch (component) {
     case api::resources_private::COMPONENT_PDF:
-      AddStringsForPdf(&dict);
-      AddAdditionalDataForPdf(&dict);
+#if BUILDFLAG(ENABLE_PDF)
+      pdf_extension_util::AddStrings(
+          pdf_extension_util::PdfViewerContext::kPdfViewer, &dict);
+      pdf_extension_util::AddAdditionalData(true, false, &dict);
+#endif
       break;
     case api::resources_private::COMPONENT_IDENTITY:
       NOTREACHED();