Fix for PDFs with lots of named destinations take a long time to load.

pdf/pdfium/pdfium_engine.cc

 // 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.
 
 #include "pdf/pdfium/pdfium_engine.h"
 
 #include <math.h>
 
 #include "base/json/json_writer.h"
 #include "base/logging.h"
@@ skipping 2371 matching lines @@
     FPDF_WIDESTRING destination_pdf_wide =
         reinterpret_cast<FPDF_WIDESTRING>(destination_wide.c_str());
     FPDF_BOOKMARK bookmark = FPDFBookmark_Find(doc_, destination_pdf_wide);
     if (!bookmark)
       return -1;
     dest = FPDFBookmark_GetDest(doc_, bookmark);
   }
   return dest ? FPDFDest_GetPageIndex(doc_, dest) : -1;
 }
 
-pp::VarDictionary PDFiumEngine::GetNamedDestinations() {
-  pp::VarDictionary named_destinations;
-  for (unsigned long i = 0; i < FPDF_CountNamedDests(doc_); i++) {
-    base::string16 name;
-    long buffer_bytes;
-    FPDF_GetNamedDest(doc_, i, NULL, buffer_bytes);
-    size_t name_length = base::checked_cast<size_t>(buffer_bytes) /
-        sizeof(base::string16::value_type);
-    if (name_length > 0) {
-      PDFiumAPIStringBufferAdapter<base::string16> api_string_adapter(
-          &name, name_length, true);
-      FPDF_DEST dest = FPDF_GetNamedDest(doc_, i, api_string_adapter.GetData(),
-                                         buffer_bytes);
-      api_string_adapter.Close(name_length);
-      if (dest) {
-        std::string named_dest = base::UTF16ToUTF8(name);
-        int page_number = GetNamedDestinationPage(named_dest);
-        if (page_number >= 0) {
-          named_destinations.Set(pp::Var(named_dest.c_str()),
-                                 pp::Var(page_number));
-        }
-      }
-    }
-  }
-  return named_destinations;
-}
-
 int PDFiumEngine::GetFirstVisiblePage() {
   CalculateVisiblePages();
   return first_visible_page_;
 }
 
 int PDFiumEngine::GetMostVisiblePage() {
   CalculateVisiblePages();
   return most_visible_page_;
 }
 
@@ skipping 1598 matching lines @@
     double* height) {
   FPDF_DOCUMENT doc = FPDF_LoadMemDocument(pdf_buffer, pdf_buffer_size, NULL);
   if (!doc)
     return false;
   bool success = FPDF_GetPageSizeByIndex(doc, page_number, width, height) != 0;
   FPDF_CloseDocument(doc);
   return success;
 }
 
 }  // namespace chrome_pdf