Print Preview: change getPreview to cr.sendWithPromise

components/printing/renderer/print_web_view_helper.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_PRINTING_RENDERER_PRINT_WEB_VIEW_HELPER_H_
 #define COMPONENTS_PRINTING_RENDERER_PRINT_WEB_VIEW_HELPER_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 136 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(MAYBE_PrintWebViewHelperTest, PrintLayoutTest);
   FRIEND_TEST_ALL_PREFIXES(MAYBE_PrintWebViewHelperTest, PrintWithIframe);
 #endif  // defined(OS_WIN) || defined(OS_MACOSX)
 
   enum PrintingResult {
     OK,
     FAIL_PRINT_INIT,
     FAIL_PRINT,
 #if BUILDFLAG(ENABLE_PRINT_PREVIEW)
     FAIL_PREVIEW,
+    INVALID_SETTINGS,
 #endif
   };
 
   enum PrintPreviewErrorBuckets {
     PREVIEW_ERROR_NONE,  // Always first.
     PREVIEW_ERROR_BAD_SETTING,
     PREVIEW_ERROR_METAFILE_COPY_FAILED,
     PREVIEW_ERROR_METAFILE_INIT_FAILED_DEPRECATED,
     PREVIEW_ERROR_ZERO_PAGES,
     PREVIEW_ERROR_MAC_DRAFT_METAFILE_INIT_FAILED_DEPRECATED,
@@ skipping 390 matching lines @@
   base::Closure on_stop_loading_closure_;
 
   base::WeakPtrFactory<PrintWebViewHelper> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PrintWebViewHelper);
 };
 
 }  // namespace printing
 
 #endif  // COMPONENTS_PRINTING_RENDERER_PRINT_WEB_VIEW_HELPER_H_