Make code compile with clang_use_chrome_plugin (part IV)

fpdfsdk/javascript/cjs_context.cpp

Index: fpdfsdk/javascript/cjs_context.cpp
diff --git a/fpdfsdk/javascript/cjs_context.cpp b/fpdfsdk/javascript/cjs_context.cpp
index b844dc6e5cad2a20ae50ec72c0b93609a6971dfb..3833b166b67852eb05632141f802859a4ec0cf48 100644
--- a/fpdfsdk/javascript/cjs_context.cpp
+++ b/fpdfsdk/javascript/cjs_context.cpp
@@ -268,6 +268,10 @@ void CJS_Context::OnExternal_Exec() {
   m_pEventHandler->OnExternal_Exec();
 }
 
+void CJS_Context::EnableMessageBox(FX_BOOL bEnable) {
+  m_bMsgBoxEnable = bEnable;
+}
+
 void CJS_Context::OnBatchExec(CPDFSDK_Document* pTarget) {
   m_pEventHandler->OnBatchExec(pTarget);
 }