Merge to XFA: Clean up CPDF_AnnotList.

fpdfsdk/src/fpdf_ext.cpp

Index: fpdfsdk/src/fpdf_ext.cpp
diff --git a/fpdfsdk/src/fpdf_ext.cpp b/fpdfsdk/src/fpdf_ext.cpp
index 196ac999679e2e796f785d48e82affbfc5b2c24c..aead361c9a04855aa3f16a67a5e81788d88b0be4 100644
--- a/fpdfsdk/src/fpdf_ext.cpp
+++ b/fpdfsdk/src/fpdf_ext.cpp
@@ -58,12 +58,12 @@ FSDK_SetUnSpObjProcessHandler(UNSUPPORT_INFO* unsp_info) {
   return TRUE;
 }
 
-void CheckUnSupportAnnot(CPDF_Document* pDoc, CPDF_Annot* pPDFAnnot) {
+void CheckUnSupportAnnot(CPDF_Document* pDoc, const CPDF_Annot* pPDFAnnot) {
   CFX_ByteString cbSubType = pPDFAnnot->GetSubType();
   if (cbSubType.Compare("3D") == 0) {
     FPDF_UnSupportError(FPDF_UNSP_ANNOT_3DANNOT);
   } else if (cbSubType.Compare("Screen") == 0) {
-    CPDF_Dictionary* pAnnotDict = pPDFAnnot->GetAnnotDict();
+    const CPDF_Dictionary* pAnnotDict = pPDFAnnot->GetAnnotDict();
     CFX_ByteString cbString;
     if (pAnnotDict->KeyExist("IT"))
       cbString = pAnnotDict->GetString("IT");
@@ -78,7 +78,7 @@ void CheckUnSupportAnnot(CPDF_Document* pDoc, CPDF_Annot* pPDFAnnot) {
   } else if (cbSubType.Compare("FileAttachment") == 0) {
     FPDF_UnSupportError(FPDF_UNSP_ANNOT_ATTACHMENT);
   } else if (cbSubType.Compare("Widget") == 0) {
-    CPDF_Dictionary* pAnnotDict = pPDFAnnot->GetAnnotDict();
+    const CPDF_Dictionary* pAnnotDict = pPDFAnnot->GetAnnotDict();
     CFX_ByteString cbString;
     if (pAnnotDict->KeyExist("FT")) {
       cbString = pAnnotDict->GetString("FT");