Reland: Make the CPDFXFA_App non-global

fpdfsdk/javascript/cjs_runtime.cpp

Index: fpdfsdk/javascript/cjs_runtime.cpp
diff --git a/fpdfsdk/javascript/cjs_runtime.cpp b/fpdfsdk/javascript/cjs_runtime.cpp
index d41726b315fa5752e984297cae26df9163a77962..637fa0a411b03ad99a27d3ec70e069fe0ba545aa 100644
--- a/fpdfsdk/javascript/cjs_runtime.cpp
+++ b/fpdfsdk/javascript/cjs_runtime.cpp
@@ -68,7 +68,7 @@ CJS_Runtime::CJS_Runtime(CPDFSDK_FormFillEnvironment* pFormFillEnv)
       m_bBlocking(false),
       m_isolateManaged(false) {
   v8::Isolate* pIsolate = nullptr;
-#ifndef PDF_ENABLE_XFA
+
   IPDF_JSPLATFORM* pPlatform = m_pFormFillEnv->GetFormFillInfo()->m_pJsPlatform;
   if (pPlatform->version <= 2) {
     unsigned int embedderDataSlot = 0;
@@ -81,44 +81,15 @@ CJS_Runtime::CJS_Runtime(CPDFSDK_FormFillEnvironment* pFormFillEnv)
   }
   m_isolateManaged = FXJS_GetIsolate(&pIsolate);
   SetIsolate(pIsolate);
-#else
-  if (CPDFXFA_App::GetInstance()->GetJSERuntime()) {
-    // TODO(tsepez): CPDFXFA_App should also use the embedder provided isolate.
-    pIsolate = CPDFXFA_App::GetInstance()->GetJSERuntime();
-    SetIsolate(pIsolate);
-  } else {
-    IPDF_JSPLATFORM* pPlatform =
-        m_pFormFillEnv->GetFormFillInfo()->m_pJsPlatform;
-    if (pPlatform->version <= 2) {
-      unsigned int embedderDataSlot = 0;
-      v8::Isolate* pExternalIsolate = nullptr;
-      if (pPlatform->version == 2) {
-        pExternalIsolate = reinterpret_cast<v8::Isolate*>(pPlatform->m_isolate);
-        embedderDataSlot = pPlatform->m_v8EmbedderSlot;
-      }
-      FXJS_Initialize(embedderDataSlot, pExternalIsolate);
-    }
-    m_isolateManaged = FXJS_GetIsolate(&pIsolate);
-    SetIsolate(pIsolate);
-  }
 
+#ifdef PDF_ENABLE_XFA
   v8::Isolate::Scope isolate_scope(pIsolate);
   v8::HandleScope handle_scope(pIsolate);
-  if (CPDFXFA_App::GetInstance()->IsJavaScriptInitialized()) {
-    CJS_Context* pContext = (CJS_Context*)NewContext();
-    InitializeEngine();
-    ReleaseContext(pContext);
-    return;
-  }
 #endif
 
   if (m_isolateManaged || FXJS_GlobalIsolateRefCount() == 0)
     DefineJSObjects();
 
-#ifdef PDF_ENABLE_XFA
-  CPDFXFA_App::GetInstance()->SetJavaScriptInitialized(TRUE);
-#endif
-
   CJS_Context* pContext = (CJS_Context*)NewContext();
   InitializeEngine();
   ReleaseContext(pContext);
@@ -261,19 +232,9 @@ FX_BOOL CJS_Runtime::GetValueByName(const CFX_ByteStringC& utf8Name,
 
   v8::Isolate::Scope isolate_scope(GetIsolate());
   v8::HandleScope handle_scope(GetIsolate());
-  v8::Local<v8::Context> old_context = GetIsolate()->GetCurrentContext();
   v8::Local<v8::Context> context = NewLocalContext();
   v8::Context::Scope context_scope(context);
 
-  // Caution: We're about to hand to XFA an object that in order to invoke
-  // methods will require that the current v8::Context always has a pointer
-  // to a CJS_Runtime in its embedder data slot. Unfortunately, XFA creates
-  // its own v8::Context which has not initialized the embedder data slot.
-  // Do so now.
-  // TODO(tsepez): redesign PDF-side objects to not rely on v8::Context's
-  // embedder data slots, and/or to always use the right context.
-  CFXJS_Engine::SetForV8Context(old_context, this);
-
   v8::Local<v8::Value> propvalue =
       context->Global()->Get(v8::String::NewFromUtf8(
           GetIsolate(), name, v8::String::kNormalString, utf8Name.GetLength()));