Add skia_exceptinos gyp define

R=robertphillips@google.com

Author: borenet@google.com

Review URL: https://chromiumcodereview.appspot.com/17094003

git-svn-id: http://skia.googlecode.com/svn/trunk@9615 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gyp/common_variables.gypi b/gyp/common_variables.gypi
index 9f65b34..9b44e41 100644
--- a/gyp/common_variables.gypi
+++ b/gyp/common_variables.gypi
@@ -120,6 +120,7 @@
     'skia_arch_type%': '<(skia_arch_type)',
     'skia_directwrite%': '<(skia_directwrite)',
     'skia_gpu%': '<(skia_gpu)',
+    'skia_win_exceptions%': 0,
     'skia_osx_sdkroot%': '<(skia_osx_sdkroot)',
     'skia_profile_enabled%': '<(skia_profile_enabled)',
     'skia_shared_lib%': '<(skia_shared_lib)',