Remove non-const CPDF_PageObjectHolder::GetPageObjectList().

This makes it easier to control modifications to the page object
list.

Bug: pdfium:1051
Change-Id: Ia85c597fa6d39e89041b990b4b6c91e327ef811d
Reviewed-on: https://pdfium-review.googlesource.com/30803
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/core/fpdfapi/page/cpdf_pageobjectholder.cpp b/core/fpdfapi/page/cpdf_pageobjectholder.cpp
index 67b356fc57..310858f7c8 100644
--- a/core/fpdfapi/page/cpdf_pageobjectholder.cpp
+++ b/core/fpdfapi/page/cpdf_pageobjectholder.cpp
@@ -119,3 +119,11 @@ bool CPDF_PageObjectHolder::RemovePageObject(CPDF_PageObject* pPageObj) {
   m_PageObjectList.erase(it);
   return true;
 }
+
+bool CPDF_PageObjectHolder::ErasePageObjectAtIndex(size_t index) {
+  if (index >= m_PageObjectList.size())
+    return false;
+
+  m_PageObjectList.erase(m_PageObjectList.begin() + index);
+  return true;
+}