Revert of Make the CPDFXFA_App non-global (patchset #3 id:80001 of https://codereview.chromium.org/2416753002/ )

Reason for revert:
https://build.chromium.org/p/client.pdfium/builders/linux_xfa_asan_lsan/builds/112/steps/embeddertests/logs/stdio

msan is sad.

Original issue's description:
> Make the CPDFXFA_App non-global
>
> This CL changes CPDFXFA_App from a global object to a child of the
> CPDFXFA_Document objects.
>
> BUG=pdfium:623
>
> Committed: https://pdfium.googlesource.com/pdfium/+/abefb79577b32d291d14d7e01a70f6f8cf213bd3

TBR=tsepez@chromium.org,thestig@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=pdfium:623

Review-Url: https://codereview.chromium.org/2412903004

1 files changed, 15 insertions, 24 deletions

diff --git a/fpdfsdk/fpdfxfa/cpdfxfa_document.cpp b/fpdfsdk/fpdfxfa/cpdfxfa_document.cpp
index 79d28c0637..df0da31beb 100644
--- a/fpdfsdk/fpdfxfa/cpdfxfa_document.cpp
+++ b/fpdfsdk/fpdfxfa/cpdfxfa_document.cpp
@@ -16,7 +16,6 @@
 #include "fpdfsdk/fsdk_define.h"
 #include "fpdfsdk/javascript/ijs_runtime.h"
 #include "public/fpdf_formfill.h"
-#include "third_party/base/ptr_util.h"
 #include "xfa/fxfa/cxfa_eventparam.h"
 #include "xfa/fxfa/xfa_ffapp.h"
 #include "xfa/fxfa/xfa_ffdoc.h"
@@ -29,11 +28,13 @@ extern void SetLastError(int err);
 extern int GetLastError();
 #endif
 
-CPDFXFA_Document::CPDFXFA_Document(std::unique_ptr<CPDF_Document> pPDFDoc)
+CPDFXFA_Document::CPDFXFA_Document(std::unique_ptr<CPDF_Document> pPDFDoc,
+                                   CPDFXFA_App* pProvider)
     : m_iDocType(DOCTYPE_PDF),
       m_pPDFDoc(std::move(pPDFDoc)),
       m_pFormFillEnv(nullptr),
       m_pXFADocView(nullptr),
+      m_pApp(pProvider),
       m_nLoadStatus(FXFA_LOADSTATUS_PRELOAD),
       m_nPageCount(0),
       m_DocEnv(this) {}
@@ -41,12 +42,6 @@ CPDFXFA_Document::CPDFXFA_Document(std::unique_ptr<CPDF_Document> pPDFDoc)
 CPDFXFA_Document::~CPDFXFA_Document() {
   m_nLoadStatus = FXFA_LOADSTATUS_CLOSING;
 
-  // Must happen before we remove the form fill environment.
-  if (m_pXFADoc) {
-    if (CXFA_FFApp* pApp = GetApp()->GetXFAApp())
-      CloseXFADoc(pApp->GetDocHandler());
-  }
-
   if (m_pFormFillEnv) {
     m_pFormFillEnv->ClearAllFocusedAnnots();
     // Once we're deleted the FormFillEnvironment will point at a bad underlying
@@ -55,21 +50,17 @@ CPDFXFA_Document::~CPDFXFA_Document() {
     m_pFormFillEnv = nullptr;
   }
 
-  m_nLoadStatus = FXFA_LOADSTATUS_CLOSED;
-}
-
-void CPDFXFA_Document::CloseXFADoc(CXFA_FFDocHandler* pDoc) {
-  if (!pDoc)
-    return;
-  m_pXFADoc->CloseDoc();
-  m_pXFADoc.reset();
-  m_pXFADocView = nullptr;
-}
+  if (m_pXFADoc) {
+    CXFA_FFApp* pApp = m_pApp->GetXFAApp();
+    if (pApp) {
+      CXFA_FFDocHandler* pDocHandler = pApp->GetDocHandler();
+      if (pDocHandler)
+        CloseXFADoc(pDocHandler);
+    }
+    m_pXFADoc.reset();
+  }
 
-CPDFXFA_App* CPDFXFA_Document::GetApp() {
-  if (!m_pApp)
-    m_pApp = pdfium::MakeUnique<CPDFXFA_App>();
-  return m_pApp.get();
+  m_nLoadStatus = FXFA_LOADSTATUS_CLOSED;
 }
 
 FX_BOOL CPDFXFA_Document::LoadXFADoc() {
@@ -80,7 +71,7 @@ FX_BOOL CPDFXFA_Document::LoadXFADoc() {
 
   m_XFAPageList.RemoveAll();
 
-  CXFA_FFApp* pApp = GetApp()->GetXFAApp();
+  CXFA_FFApp* pApp = m_pApp->GetXFAApp();
   if (!pApp)
     return FALSE;
 
@@ -104,7 +95,7 @@ FX_BOOL CPDFXFA_Document::LoadXFADoc() {
     return FALSE;
   }
   m_pXFADoc->StopLoad();
-  m_pXFADoc->GetXFADoc()->InitScriptContext(GetApp()->GetJSERuntime());
+  m_pXFADoc->GetXFADoc()->InitScriptContext(m_pApp->GetJSERuntime());
 
   if (m_pXFADoc->GetDocType() == XFA_DOCTYPE_Dynamic)
     m_iDocType = DOCTYPE_DYNAMIC_XFA;