Replace calls to v8::Isolate::GetCurrent(), part 3

Fixed: pdfium:1737
Change-Id: I3b83015078ad46a733b18e54299be592d5b164a2
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/86296
Commit-Queue: Daniel Hosseinian <dhoss@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
diff --git a/fxjs/cjs_field.cpp b/fxjs/cjs_field.cpp
index 3ffae49..e6addf8 100644
--- a/fxjs/cjs_field.cpp
+++ b/fxjs/cjs_field.cpp
@@ -2264,7 +2264,8 @@
   if (pObj.IsEmpty())
     return CJS_Result::Failure(JSMessage::kBadObjectError);
 
-  auto* pJS_Icon = static_cast<CJS_Icon*>(CFXJS_Engine::GetObjectPrivate(pObj));
+  auto* pJS_Icon = static_cast<CJS_Icon*>(
+      CFXJS_Engine::GetObjectPrivate(pRuntime->GetIsolate(), pObj));
   return pJS_Icon ? CJS_Result::Success(pJS_Icon->ToV8Object())
                   : CJS_Result::Failure(JSMessage::kBadObjectError);
 }
@@ -2377,8 +2378,8 @@
     if (pObj.IsEmpty())
       return CJS_Result::Failure(JSMessage::kBadObjectError);
 
-    auto* pJSField =
-        static_cast<CJS_Field*>(CFXJS_Engine::GetObjectPrivate(pObj));
+    auto* pJSField = static_cast<CJS_Field*>(
+        CFXJS_Engine::GetObjectPrivate(pRuntime->GetIsolate(), pObj));
     pJSField->AttachField(m_pJSDoc.Get(), *pStr);
     pRuntime->PutArrayElement(FormFieldArray, j++,
                               pJSField