Fix Mac fontconfig build

gyp/gm.gyp

Index: gyp/gm.gyp
diff --git a/gyp/gm.gyp b/gyp/gm.gyp
index a543aca4db57dbb5bcd7e871b5e3d4516216569f..1b71840c25e11fa5bd3d0181205f4cd4b84f9ee5 100644
--- a/gyp/gm.gyp
+++ b/gyp/gm.gyp
@@ -73,7 +73,7 @@
             'pdfviewer_lib.gyp:pdfviewer_lib',
           ],
         }],
-        ['skia_os in ["linux", "mac", "win"]', {
+        ['skia_os in ["linux", "win"] or (skia_os == "mac" and skia_mac_poppler)', {

[epoger, 2014/01/08 19:40:22]

I think it would be clearer to use a single flag (e.g. skia_enable_poppler) for
the conditional, and (elsewhere) set its default value based on skia_os.

Like how skia_arch_width is automatically set (in common_variables.gypi)
depending on skia_os, but can be overridden from the command line...

This may be what Ben is referring to in
https://codereview.chromium.org/113203003/diff/60001/gyp/common_variables.gyp...
, but I'm not sure.

[vandebo (ex-Chrome), 2014/01/08 21:24:15]

Changed to skia_enable_popper and made that work across all platforms.

[epoger, 2014/01/08 21:38:12]

Why do we still need the list of operating systems here?  Can't you just check
for skia_poppler_enabled , and set the default for that variable based on the
OS?

[vandebo (ex-Chrome), 2014/01/08 22:08:18]

Done.

           'dependencies': [
             'poppler.gyp:libpoppler-cpp-gpl',
           ],