Fix FXSYS_itoa() implementation.

I thought about removing it, but decided to fix it instead until c++11
hits and there may be better alternatives.

Remove unused variants.

BUG=517854
R=brucedawson@chromium.org, thestig@chromium.org

Review URL: https://codereview.chromium.org/1274423003 .

1 files changed, 1 insertions, 0 deletions

diff --git a/BUILD.gn b/BUILD.gn
index 6581943163..4741941684 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -732,6 +732,7 @@ test("pdfium_unittests") {
     "core/src/fxcrt/fx_basic_bstring_unittest.cpp",
     "core/src/fxcrt/fx_basic_memmgr_unittest.cpp",
     "core/src/fxcrt/fx_basic_wstring_unittest.cpp",
+    "core/src/fxcrt/fx_system_unittest.cpp",
     "testing/fx_string_testhelpers.cpp",
     "testing/fx_string_testhelpers.h",
   ]