Merge to XFA: Make JS app.setTimeOut() work again.

This regressed in commit 794c9b6.

BUG=551248
TBR=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1424743006 .

(cherry picked from commit 8cadf995e9a0fec8da19f69edac9d10fccca7eed)
(cherry picked from commit 955930dce7e4b5c764cdd34b134baea4207de523)

Review URL: https://codereview.chromium.org/1416663008 .
diff --git a/fpdfsdk/src/javascript/JS_Object.cpp b/fpdfsdk/src/javascript/JS_Object.cpp
index 0556c4e..883ecc8 100644
--- a/fpdfsdk/src/javascript/JS_Object.cpp
+++ b/fpdfsdk/src/javascript/JS_Object.cpp
@@ -108,6 +108,7 @@
       m_bValid(true),
       m_nType(nType),
       m_dwTimeOut(dwTimeOut),
+      m_swJScript(script),
       m_pRuntime(pRuntime),
       m_pApp(pApp) {
   IFX_SystemHandler* pHandler = m_pApp->GetSysHandler();