Cleanup env variable names

fpdfsdk/formfiller/cffl_interactiveformfiller.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef FPDFSDK_FORMFILLER_CFFL_INTERACTIVEFORMFILLER_H_
 #define FPDFSDK_FORMFILLER_CFFL_INTERACTIVEFORMFILLER_H_
 
 #include <map>
 #include <memory>
 
 #include "fpdfsdk/cpdfsdk_annot.h"
 #include "fpdfsdk/fsdk_define.h"
 #include "fpdfsdk/pdfwindow/PWL_Edit.h"
 
 class CFFL_FormFiller;
 class CPDFSDK_FormFillEnvironment;
 class CPDFSDK_PageView;
 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,
                         CPDFSDK_Annot* pAnnot,
                         CFX_FloatPoint point);
   FX_RECT GetViewBBox(CPDFSDK_PageView* pPageView, CPDFSDK_Annot* pAnnot);
   void OnDraw(CPDFSDK_PageView* pPageView,
               CPDFSDK_Annot* pAnnot,
               CFX_RenderDevice* pDevice,
               CFX_Matrix* pUser2Device);
@@ skipping 125 matching lines @@
                       uint32_t nFlag) override;
   void OnPopupPostOpen(void* pPrivateData,
                        FX_BOOL& bExit,
                        uint32_t nFlag) override;
   void SetFocusAnnotTab(CPDFSDK_Annot* pWidget,
                         FX_BOOL bSameField,
                         FX_BOOL bNext);
 #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;
 };
 
 class CFFL_PrivateData {
  public:
   CPDFSDK_Widget* pWidget;
   CPDFSDK_PageView* pPageView;
   int nWidgetAge;
   int nValueAge;
 };
 
 #endif  // FPDFSDK_FORMFILLER_CFFL_INTERACTIVEFORMFILLER_H_