Suppress deprecation warnings for XFA.

xfa.gyp

 {
   "variables": {
     "pdf_enable_v8%": 1,
   },
   "target_defaults": {
     "defines": [
       "PDF_ENABLE_XFA",
     ],
   },
   "targets":[
@@ skipping 622 matching lines @@
         "xfa/src/fxfa/src/parser/xfa_script_resolveprocessor.h",
         "xfa/src/fxfa/src/parser/xfa_script_signaturepseudomodel.cpp",
         "xfa/src/fxfa/src/parser/xfa_script_signaturepseudomodel.h",
         "xfa/src/fxfa/src/parser/xfa_utils_imp.cpp",
         "xfa/src/fxgraphics/src/fx_graphics.cpp",
         "xfa/src/fxgraphics/src/fx_path_generator.cpp",
         "xfa/src/fxgraphics/src/fx_path_generator.h",
         "xfa/src/fxgraphics/src/pre.h",
       ],
       "conditions": [
+        ["clang==1" , {
+          # TODO(tsepez): remove this when FX fixes warnings
+          "cflags": [
+            "-Wno-deprecated-declarations"
+          ],
+        }],
         ["pdf_enable_v8==1", {
           'dependencies': [
             '<(DEPTH)/v8/tools/gyp/v8.gyp:v8',
           ],
           'export_dependent_settings': [
             '<(DEPTH)/v8/tools/gyp/v8.gyp:v8',
           ],
           'include_dirs': [
             '<(DEPTH)/v8',
             '<(DEPTH)/v8/include',
@@ skipping 34 matching lines @@
           "sources": [],
         }],
         ["OS == 'mac'", {
           "configurations": {},
           "sources": [],
         }],
       ]
     }
   ]
 }