Refcount CPDF_Image all the time.

Remove the old externally-counted CPDF_CountedImage type.

Change-Id: Ia0b288586272da3f2daf7dfc153f08e62794321a
Reviewed-on: https://pdfium-review.googlesource.com/3553
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
diff --git a/fpdfsdk/fpdfeditimg.cpp b/fpdfsdk/fpdfeditimg.cpp
index ca78088..4738bd1 100644
--- a/fpdfsdk/fpdfeditimg.cpp
+++ b/fpdfsdk/fpdfeditimg.cpp
@@ -48,9 +48,9 @@
   if (!pDoc)
     return nullptr;
 
-  CPDF_ImageObject* pImageObj = new CPDF_ImageObject;
-  pImageObj->SetOwnedImage(pdfium::MakeUnique<CPDF_Image>(pDoc));
-  return pImageObj;
+  auto pImageObj = pdfium::MakeUnique<CPDF_ImageObject>();
+  pImageObj->SetImage(pdfium::MakeRetain<CPDF_Image>(pDoc));
+  return pImageObj.release();
 }
 
 DLLEXPORT FPDF_PAGEOBJECT STDCALL