Remove FFI_ from CPDFSDK_Environment method names

fpdfsdk/formfiller/cffl_combobox.cpp

Index: fpdfsdk/formfiller/cffl_combobox.cpp
diff --git a/fpdfsdk/formfiller/cffl_combobox.cpp b/fpdfsdk/formfiller/cffl_combobox.cpp
index 7ff09b7948cba7f6a87ba4161f0edf2aa4ace04d..448b0d94b9e350e0933bae3870fd5f56d10cbabb 100644
--- a/fpdfsdk/formfiller/cffl_combobox.cpp
+++ b/fpdfsdk/formfiller/cffl_combobox.cpp
@@ -271,8 +271,8 @@ void CFFL_ComboBox::OnSetFocus(CPWL_Wnd* pWnd) {
     int nCharacters = wsText.GetLength();
     CFX_ByteString bsUTFText = wsText.UTF16LE_Encode();
     unsigned short* pBuffer = (unsigned short*)bsUTFText.c_str();
-    m_pApp->FFI_OnSetFieldInputFocus(m_pWidget->GetFormField(), pBuffer,
-                                     nCharacters, TRUE);
+    m_pApp->OnSetFieldInputFocus(m_pWidget->GetFormField(), pBuffer,
+                                 nCharacters, TRUE);
   }
 }