Remove unused context param from execute.

fpdfsdk/javascript/JS_Runtime_Stub.cpp

Index: fpdfsdk/javascript/JS_Runtime_Stub.cpp
diff --git a/fpdfsdk/javascript/JS_Runtime_Stub.cpp b/fpdfsdk/javascript/JS_Runtime_Stub.cpp
index e94f8c77807fd83edf5a6e789eba93ae4ac86c61..49309003371771579fb04d63b9347d769b24cc30 100644
--- a/fpdfsdk/javascript/JS_Runtime_Stub.cpp
+++ b/fpdfsdk/javascript/JS_Runtime_Stub.cpp
@@ -148,9 +148,7 @@ class CJS_RuntimeStub final : public IJS_Runtime {
   }
 #endif  // PDF_ENABLE_XFA
 
-  int Execute(IJS_Context* cc,
-              const wchar_t* script,
-              CFX_WideString* info) override {
+  int Execute(const CFX_WideString& script, CFX_WideString* info) override {
     return 0;
   }