Revert of Make the CPDFXFA_App non-global

fpdfsdk/fpdfview.cpp

Index: fpdfsdk/fpdfview.cpp
diff --git a/fpdfsdk/fpdfview.cpp b/fpdfsdk/fpdfview.cpp
index cb0cf5917c19ab0e32de404f5c88e2e2464ca359..3ab81fe1124321bd4f4e355aad20bdc1310eab5a 100644
--- a/fpdfsdk/fpdfview.cpp
+++ b/fpdfsdk/fpdfview.cpp
@@ -42,7 +42,6 @@
 #include "fpdfsdk/fpdfxfa/cpdfxfa_page.h"
 #include "fpdfsdk/fpdfxfa/cxfa_fwladaptertimermgr.h"
 #include "public/fpdf_formfill.h"
-#include "xfa/fxbarcode/BC_Library.h"
 #endif  // PDF_ENABLE_XFA
 
 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
@@ -71,8 +70,8 @@
 
 FPDF_DOCUMENT FPDFDocumentFromCPDFDocument(CPDF_Document* doc) {
 #ifdef PDF_ENABLE_XFA
-  return doc ? FPDFDocumentFromUnderlying(
-                   new CPDFXFA_Document(pdfium::WrapUnique(doc)))
+  return doc ? FPDFDocumentFromUnderlying(new CPDFXFA_Document(
+                   pdfium::WrapUnique(doc), CPDFXFA_App::GetInstance()))
              : nullptr;
 #else   // PDF_ENABLE_XFA
   return FPDFDocumentFromUnderlying(doc);
@@ -286,19 +285,19 @@
   pModuleMgr->LoadEmbeddedKorea1CMaps();
 
 #ifdef PDF_ENABLE_XFA
-  FXJSE_Initialize();
-  BC_Library_Init();
-#endif  // PDF_ENABLE_XFA
+  CPDFXFA_App::GetInstance()->Initialize(
+      (cfg && cfg->version >= 2) ? static_cast<v8::Isolate*>(cfg->m_pIsolate)
+                                 : nullptr);
+#endif  // PDF_ENABLE_XFA
+
   if (cfg && cfg->version >= 2)
     IJS_Runtime::Initialize(cfg->m_v8EmbedderSlot, cfg->m_pIsolate);
 }
 
 DLLEXPORT void STDCALL FPDF_DestroyLibrary() {
 #ifdef PDF_ENABLE_XFA
-  BC_Library_Destory();
-  FXJSE_Finalize();
-#endif  // PDF_ENABLE_XFA
-
+  CPDFXFA_App::ReleaseInstance();
+#endif  // PDF_ENABLE_XFA
   CPDF_ModuleMgr::Destroy();
   CFX_GEModule::Destroy();
 
@@ -378,7 +377,11 @@
     ProcessParseError(error);
     return nullptr;
   }
-  return FPDFDocumentFromCPDFDocument(pDocument.release());
+#ifdef PDF_ENABLE_XFA
+  return new CPDFXFA_Document(std::move(pDocument), CPDFXFA_App::GetInstance());
+#else   // PDF_ENABLE_XFA
+  return pDocument.release();
+#endif  // PDF_ENABLE_XFA
 }
 
 #ifdef PDF_ENABLE_XFA