Rename CPDFDoc_Environment to CPDFSDK_Environment

fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h

Index: fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h
diff --git a/fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h b/fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h
index c83c770f97a8e9daa476e145cf8833bc9864a238..c451030e80266e4cf7273a3ba5ce68031359fba1 100644
--- a/fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h
+++ b/fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h
@@ -20,7 +20,7 @@ class CPDFXFA_App;
 class CPDFXFA_Document;
 class CPDFXFA_Page;
 class CPDFSDK_Document;
-class CPDFDoc_Environment;
+class CPDFSDK_Environment;
 class IJS_Runtime;
 class IJS_Context;
 class CXFA_FFDocHandler;
@@ -45,7 +45,7 @@ class CPDFXFA_Document : public IXFA_DocProvider {
   void RemovePage(CPDFXFA_Page* page);
   int GetDocType() { return m_iDocType; }
 
-  CPDFSDK_Document* GetSDKDocument(CPDFDoc_Environment* pFormFillEnv);
+  CPDFSDK_Document* GetSDKDocument(CPDFSDK_Environment* pFormFillEnv);
 
   void FXRect2PDFRect(const CFX_RectF& fxRectF, CFX_FloatRect& pdfRect);