Rework of CPDF_Parser::GetLastObjNum.

Change-Id: I0481774858a9d9823580e1207807e35be8a9eea9
Reviewed-on: https://pdfium-review.googlesource.com/36270
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Art Snake <art-snake@yandex-team.ru>

1 files changed, 6 insertions, 1 deletions

diff --git a/core/fpdfapi/parser/cpdf_cross_ref_table.h b/core/fpdfapi/parser/cpdf_cross_ref_table.h
index 9631216b0c..d8bda7125f 100644
--- a/core/fpdfapi/parser/cpdf_cross_ref_table.h
+++ b/core/fpdfapi/parser/cpdf_cross_ref_table.h
@@ -60,7 +60,12 @@ class CPDF_CrossRefTable {
 
   void Update(std::unique_ptr<CPDF_CrossRefTable> new_cross_ref);
 
-  void ShrinkObjectMap(uint32_t objnum);
+  void ShrinkObjectMap(uint32_t max_size);
+
+  // The total number of entries in the file’s cross-reference table, as
+  // defined by the combination of the original section and all update
+  // section.
+  uint32_t GetSize() const;
 
  private:
   void UpdateInfo(std::map<uint32_t, ObjectInfo>&& new_objects_info);