Enable XFA codecs by default

This Cl enables the XFA codecs by default in order to get the fuzzers working
again.

Change-Id: Icea6df42b1b7bcee22618bd436502c518e69041f
Reviewed-on: https://pdfium-review.googlesource.com/2877
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>
diff --git a/pdfium.gni b/pdfium.gni
index 614ab91..8ce09f9 100644
--- a/pdfium.gni
+++ b/pdfium.gni
@@ -18,16 +18,16 @@
   pdf_enable_xfa = pdf_enable_xfa_override
 
   # If XFA, also support bmp codec. Ignored if not XFA.
-  pdf_enable_xfa_bmp = false
+  pdf_enable_xfa_bmp = true
 
   # If XFA, also support gif codec. Ignored if not XFA.
-  pdf_enable_xfa_gif = false
+  pdf_enable_xfa_gif = true
 
   # If XFA, also support png codec. Ignored if not XFA.
-  pdf_enable_xfa_png = false
+  pdf_enable_xfa_png = true
 
   # If XFA, also support png codec. Ignored if not XFA.
-  pdf_enable_xfa_tiff = false
+  pdf_enable_xfa_tiff = true
 
   # Build PDFium against skia (experimental) rather than agg. Use Skia to draw everything.
   pdf_use_skia = pdf_use_skia_override