Split CPDF_PageObjectHolder off from CPDF_PageObjectList

Eventually, we're going to expose an iterator over
CPDF_PageObjectList that we don't want to be inherited by
the CPDF_PageObjectHolder sub-classes: page and form.

Also, the operations that the object holder performs dealing
with inquiring about masks and such seem beyond the scope of
what a list would provide.  Hence the "Holder" name.

R=thestig@chromium.org

Review URL: https://codereview.chromium.org/1701073002 .

1 files changed, 2 insertions, 2 deletions

diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
index 022c170bf0..7fa3286e11 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
@@ -841,10 +841,10 @@ void CPDF_ContentParser::Continue(IFX_Pause* pPause) {
         m_pType3Char->m_BBox.top =
             FXSYS_round(m_pParser->GetType3Data()[5] * 1000);
       }
-      FX_POSITION pos = m_pObjects->GetFirstObjectPosition();
+      FX_POSITION pos = m_pObjects->GetPageObjectList()->GetHeadPosition();
       while (pos) {
         CPDF_PageObject* pObj =
-            (CPDF_PageObject*)m_pObjects->GetNextObject(pos);
+            m_pObjects->GetPageObjectList()->GetNextObject(pos);
         if (pObj->m_ClipPath.IsNull()) {
           continue;
         }