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/include/fpdfapi/fpdf_render.h b/core/include/fpdfapi/fpdf_render.h
index ec5d151914..fc0f68afe8 100644
--- a/core/include/fpdfapi/fpdf_render.h
+++ b/core/include/fpdfapi/fpdf_render.h
@@ -74,7 +74,7 @@ class CPDF_RenderContext {
  public:
   class Layer {
    public:
-    CPDF_PageObjectList* m_pObjectList;
+    CPDF_PageObjectHolder* m_pObjectHolder;
     CFX_Matrix m_Matrix;
   };
 
@@ -82,7 +82,7 @@ class CPDF_RenderContext {
   CPDF_RenderContext(CPDF_Document* pDoc, CPDF_PageRenderCache* pPageCache);
   ~CPDF_RenderContext();
 
-  void AppendLayer(CPDF_PageObjectList* pObjectList,
+  void AppendLayer(CPDF_PageObjectHolder* pObjectHolder,
                    const CFX_Matrix* pObject2Device);
 
   void Render(CFX_RenderDevice* pDevice,