Stub out Document::syncAnnotScan method.

fpdfsdk/javascript/Document.cpp

Index: fpdfsdk/javascript/Document.cpp
diff --git a/fpdfsdk/javascript/Document.cpp b/fpdfsdk/javascript/Document.cpp
index 8fb07b085b2c05f17315aafae3fdd87624073af7..8fb9ce60dc5433c32e11c6f0b8b657059ebbd141 100644
--- a/fpdfsdk/javascript/Document.cpp
+++ b/fpdfsdk/javascript/Document.cpp
@@ -137,6 +137,7 @@ JS_STATIC_METHOD_ENTRY(resetForm)
 JS_STATIC_METHOD_ENTRY(removeIcon)
 JS_STATIC_METHOD_ENTRY(saveAs)
 JS_STATIC_METHOD_ENTRY(submitForm)
+JS_STATIC_METHOD_ENTRY(syncAnnotScan)
 JS_STATIC_METHOD_ENTRY(mailDoc)
 END_JS_STATIC_METHOD()
 
@@ -569,6 +570,13 @@ FX_BOOL Document::saveAs(IJS_Context* cc,
   return TRUE;
 }
 
+FX_BOOL Document::syncAnnotScan(IJS_Context* cc,
+                                const std::vector<CJS_Value>& params,
+                                CJS_Value& vRet,
+                                CFX_WideString& sError) {
+  return TRUE;
+}
+
 FX_BOOL Document::submitForm(IJS_Context* cc,
                              const std::vector<CJS_Value>& params,
                              CJS_Value& vRet,