Rename GetElementValue() to GetDirectObject{By,At}().

fpdfsdk/javascript/app.cpp

Index: fpdfsdk/javascript/app.cpp
diff --git a/fpdfsdk/javascript/app.cpp b/fpdfsdk/javascript/app.cpp
index 83836759d763a946616bacbc8b8bab59de23fcf3..86c9979b1ee6b53e46d7d31859c24a2ccaa8c7f7 100644
--- a/fpdfsdk/javascript/app.cpp
+++ b/fpdfsdk/javascript/app.cpp
@@ -296,7 +296,7 @@ FX_BOOL app::alert(IJS_Context* cc,
       for (int i = 0; i < carray.GetLength(); ++i) {
         if (i)
           swMsg += L", ";
-        carray.GetElement(i, element);
+        carray.GetObjectBy(i, element);
         swMsg += element.ToCFXWideString();
       }
       swMsg += L"]";