Fix including gtk rules in other OSs.

atom.gyp

@@ -255,7 +255,7 @@
       'chromium_src/ui/base/x/x11_util.cc',
       'chromium_src/ui/events/keycodes/keyboard_code_conversion_gtk.cc',
       'chromium_src/ui/events/keycodes/keyboard_code_conversion_gtk.h',
-      'chromium_src/ui/gfx/gfx_gtk_util.cc',
+      'chromium_src/ui/gfx/gtk_util_gfx.cc',
       'chromium_src/ui/gfx/gtk_util.h',
       '<@(native_mate_files)',
     ],

filename_rules.gypi

@@ -33,6 +33,7 @@
       'sources/': [
         ['exclude', '_linux(_unittest)?\\.(h|cc)$'],
         ['exclude', '(^|/)linux/'],
+        ['exclude', '(^|/)linux/'],
       ],
     }],
     ['OS!="android"', {
@@ -57,6 +58,8 @@
         ['exclude', '_gtk(_browsertest|_unittest)?\\.(h|cc)$'],
         ['exclude', '(^|/)gtk/'],
         ['exclude', '(^|/)gtk_[^/]*\\.(h|cc)$'],
+        ['exclude', '(^|/)libgtk2ui/'],
+        ['exclude', '(^|/)x/'],
       ],
     }],
     ['OS!="win"', {