Rename CPDFDoc_Environment to CPDFSDK_Environment

fpdfsdk/formfiller/cffl_formfiller.h

Index: fpdfsdk/formfiller/cffl_formfiller.h
diff --git a/fpdfsdk/formfiller/cffl_formfiller.h b/fpdfsdk/formfiller/cffl_formfiller.h
index d691e3f6cecf0e560821cdfe71f2f04ca3cfeda3..6a41185c391acdecec975932b701b2f51f6d015b 100644
--- a/fpdfsdk/formfiller/cffl_formfiller.h
+++ b/fpdfsdk/formfiller/cffl_formfiller.h
@@ -13,14 +13,14 @@
 #include "fpdfsdk/formfiller/cffl_iformfiller.h"
 #include "fpdfsdk/include/pdfsdk_fieldaction.h"
 
-class CPDFDoc_Environment;
 class CPDFSDK_Annot;
+class CPDFSDK_Environment;
 class CPDFSDK_PageView;
 class CPDFSDK_Widget;
 
 class CFFL_FormFiller : public IPWL_Provider, public CPWL_TimerHandler {
  public:
-  CFFL_FormFiller(CPDFDoc_Environment* pApp, CPDFSDK_Annot* pAnnot);
+  CFFL_FormFiller(CPDFSDK_Environment* pApp, CPDFSDK_Annot* pAnnot);
   ~CFFL_FormFiller() override;
 
   virtual FX_RECT GetViewBBox(CPDFSDK_PageView* pPageView,
@@ -146,7 +146,7 @@ class CFFL_FormFiller : public IPWL_Provider, public CPWL_TimerHandler {
                               double top,
                               double right,
                               double bottom);
-  CPDFDoc_Environment* GetApp() { return m_pApp; }
+  CPDFSDK_Environment* GetApp() { return m_pApp; }
   CPDFSDK_Annot* GetSDKAnnot() { return m_pAnnot; }
 
  protected:
@@ -160,7 +160,7 @@ class CFFL_FormFiller : public IPWL_Provider, public CPWL_TimerHandler {
   // until the PWL_Edit is done with it. pdfium:566
   void DestroyWindows();
 
-  CPDFDoc_Environment* m_pApp;
+  CPDFSDK_Environment* m_pApp;
   CPDFSDK_Widget* m_pWidget;
   CPDFSDK_Annot* m_pAnnot;
 
@@ -171,7 +171,7 @@ class CFFL_FormFiller : public IPWL_Provider, public CPWL_TimerHandler {
 
 class CFFL_Button : public CFFL_FormFiller {
  public:
-  CFFL_Button(CPDFDoc_Environment* pApp, CPDFSDK_Annot* pWidget);
+  CFFL_Button(CPDFSDK_Environment* pApp, CPDFSDK_Annot* pWidget);
   ~CFFL_Button() override;
 
   // CFFL_FormFiller