Use actual type instead CFX_Deletable

BUILD.gn

Index: BUILD.gn
diff --git a/BUILD.gn b/BUILD.gn
index 7dda81dbc7e98bb384da93ed584c146c8d18fde7..885757dd7d66d52c88ed594f1dc7298215697360 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -80,11 +80,12 @@ static_library("pdfium") {
     "fpdfsdk/fsdk_baseannot.cpp",
     "fpdfsdk/fsdk_baseform.cpp",
     "fpdfsdk/fsdk_mgr.cpp",
-    "fpdfsdk/fsdk_rendercontext.cpp",
+    "fpdfsdk/fsdk_pauseadapter.cpp",
     "fpdfsdk/include/fsdk_actionhandler.h",
     "fpdfsdk/include/fsdk_annothandler.h",
     "fpdfsdk/include/fsdk_baseannot.h",
     "fpdfsdk/include/fsdk_baseform.h",
+    "fpdfsdk/include/fsdk_pauseadapter.h",
     "public/fpdf_dataavail.h",
     "public/fpdf_doc.h",
     "public/fpdf_edit.h",
@@ -472,6 +473,8 @@ static_library("fpdfapi") {
     "core/fpdfapi/fpdf_render/include/cpdf_textrenderer.h",
     "core/fpdfapi/fpdf_render/render_int.h",
     "core/fpdfapi/include/cpdf_modulemgr.h",
+    "core/fpdfapi/include/rendercontext.h",
+    "core/fpdfapi/rendercontext.cpp",
   ]
   configs += [ ":pdfium_core_config" ]
 }