Start proxying CPDFSDK_Document methods through CPDFSDK_FormFillEnvironment

fpdfsdk/formfiller/cffl_interactiveformfiller.h

Index: fpdfsdk/formfiller/cffl_interactiveformfiller.h
diff --git a/fpdfsdk/formfiller/cffl_interactiveformfiller.h b/fpdfsdk/formfiller/cffl_interactiveformfiller.h
index 58fafe032d50688ba7333c11fc69898002045990..d463b9f2f6c44e328011d20908a2462489b31d6f 100644
--- a/fpdfsdk/formfiller/cffl_interactiveformfiller.h
+++ b/fpdfsdk/formfiller/cffl_interactiveformfiller.h
@@ -21,7 +21,8 @@ class CPDFSDK_Widget;
 
 class CFFL_InteractiveFormFiller : public IPWL_Filler_Notify {
  public:
-  explicit CFFL_InteractiveFormFiller(CPDFSDK_FormFillEnvironment* pEnv);
+  explicit CFFL_InteractiveFormFiller(
+      CPDFSDK_FormFillEnvironment* pFormFillEnv);
   ~CFFL_InteractiveFormFiller() override;
 
   FX_BOOL Annot_HitTest(CPDFSDK_PageView* pPageView,
@@ -167,7 +168,7 @@ class CFFL_InteractiveFormFiller : public IPWL_Filler_Notify {
 #endif  // PDF_ENABLE_XFA
   void UnRegisterFormFiller(CPDFSDK_Annot* pAnnot);
 
-  CPDFSDK_FormFillEnvironment* const m_pEnv;
+  CPDFSDK_FormFillEnvironment* const m_pFormFillEnv;
   CFFL_Widget2Filler m_Maps;
   FX_BOOL m_bNotifying;
 };