Merge to M50: Re-land "Only place primitive objects on the V8 global template."

fpdfsdk/src/jsapi/fxjs_v8.cpp

 // 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
 
 #include "fpdfsdk/include/jsapi/fxjs_v8.h"
 
 #include <vector>
 
@@ skipping 274 matching lines @@
   CFX_ByteString bsMethodName = CFX_WideString(sMethodName).UTF8Encode();
   GetGlobalObjectTemplate(pIsolate)
       ->Set(v8::String::NewFromUtf8(pIsolate, bsMethodName.c_str(),
                                     v8::NewStringType::kNormal)
                 .ToLocalChecked(),
             v8::FunctionTemplate::New(pIsolate, pMethodCall), v8::ReadOnly);
 }
 
 void FXJS_DefineGlobalConst(v8::Isolate* pIsolate,
                             const wchar_t* sConstName,
-                            v8::Local<v8::Value> pDefault) {
+                            v8::FunctionCallback pConstGetter) {
   v8::Isolate::Scope isolate_scope(pIsolate);
   v8::HandleScope handle_scope(pIsolate);
   CFX_ByteString bsConst = CFX_WideString(sConstName).UTF8Encode();
-  GetGlobalObjectTemplate(pIsolate)->Set(
-      v8::String::NewFromUtf8(pIsolate, bsConst.c_str(),
-                              v8::NewStringType::kNormal).ToLocalChecked(),
-      pDefault, v8::ReadOnly);
+  GetGlobalObjectTemplate(pIsolate)
+      ->SetAccessorProperty(v8::String::NewFromUtf8(pIsolate, bsConst.c_str(),
+                                                    v8::NewStringType::kNormal)
+                                .ToLocalChecked(),
+                            v8::FunctionTemplate::New(pIsolate, pConstGetter));
 }
 
 void FXJS_InitializeRuntime(
     v8::Isolate* pIsolate,
     IJS_Runtime* pIRuntime,
     v8::Global<v8::Context>* pV8PersistentContext,
     std::vector<v8::Global<v8::Object>*>* pStaticObjects) {
   if (pIsolate == g_isolate)
     ++g_isolate_ref_count;
 
@@ skipping 500 matching lines @@
                                   v8::Local<v8::Value> pValue) {
   if (pValue.IsEmpty())
     return v8::Local<v8::Array>();
   v8::Local<v8::Context> context = pIsolate->GetCurrentContext();
   return v8::Local<v8::Array>::Cast(pValue->ToObject(context).ToLocalChecked());
 }
 
 void FXJS_ValueCopy(v8::Local<v8::Value>& pTo, v8::Local<v8::Value> pFrom) {
   pTo = pFrom;
 }