Replace FX_CHAR and FX_WCHAR with underlying types.

Change-Id: I96e0a20d66b9184d22f64d8e4ce0dadd5a78c1e8
Reviewed-on: https://pdfium-review.googlesource.com/2967
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
diff --git a/fpdfsdk/cpdfsdk_baannot.cpp b/fpdfsdk/cpdfsdk_baannot.cpp
index 3eedf15..3c96550 100644
--- a/fpdfsdk/cpdfsdk_baannot.cpp
+++ b/fpdfsdk/cpdfsdk_baannot.cpp
@@ -71,7 +71,7 @@
     return false;
 
   // Choose the right sub-ap
-  const FX_CHAR* ap_entry = "N";
+  const char* ap_entry = "N";
   if (mode == CPDF_Annot::Down)
     ap_entry = "D";
   else if (mode == CPDF_Annot::Rollover)