Remove bare new from JS_Define.h

Change-Id: Ic734c7141e52b8ca332ca9dc78118b84904c41b0
Reviewed-on: https://pdfium-review.googlesource.com/24470
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>
diff --git a/fxjs/JS_Define.h b/fxjs/JS_Define.h
index 6de56f4..08654b9 100644
--- a/fxjs/JS_Define.h
+++ b/fxjs/JS_Define.h
@@ -13,6 +13,7 @@
 #include "fxjs/cjs_return.h"
 #include "fxjs/fxjs_v8.h"
 #include "fxjs/js_resources.h"
+#include "third_party/base/ptr_util.h"
 
 double JS_GetDateTime();
 int JS_GetYearFromTime(double dt);
@@ -49,7 +50,7 @@
 template <class T, class A>
 static void JSConstructor(CFXJS_Engine* pEngine, v8::Local<v8::Object> obj) {
   CJS_Object* pObj = new T(obj);
-  pObj->SetEmbedObject(new A(pObj));
+  pObj->SetEmbedObject(pdfium::MakeUnique<A>(pObj));
   pEngine->SetObjectPrivate(obj, pObj);
   pObj->InitInstance(static_cast<CJS_Runtime*>(pEngine));
 }
diff --git a/fxjs/cjs_object.h b/fxjs/cjs_object.h
index d929a01..f4b0d29 100644
--- a/fxjs/cjs_object.h
+++ b/fxjs/cjs_object.h
@@ -8,6 +8,7 @@
 #define FXJS_CJS_OBJECT_H_
 
 #include <memory>
+#include <utility>
 
 #include "fpdfsdk/fsdk_define.h"
 #include "fxjs/cjs_embedobj.h"
@@ -57,7 +58,9 @@
   v8::Local<v8::Object> ToV8Object() { return m_pV8Object.Get(m_pIsolate); }
 
   // Takes ownership of |pObj|.
-  void SetEmbedObject(CJS_EmbedObj* pObj) { m_pEmbedObj.reset(pObj); }
+  void SetEmbedObject(std::unique_ptr<CJS_EmbedObj> pObj) {
+    m_pEmbedObj = std::move(pObj);
+  }
   CJS_EmbedObj* GetEmbedObject() const { return m_pEmbedObj.get(); }
 
   v8::Isolate* GetIsolate() const { return m_pIsolate; }