Remove all uses of toolkit_use_gtk in the gyp files.

printing/printing.gyp

Index: printing/printing.gyp
diff --git a/printing/printing.gyp b/printing/printing.gyp
index bd4940dd6d160d8ee5300a0637f58e94680bffbe..6d3f353be6fd5f88dc69e8f5fa7789f69534cf95 100644
--- a/printing/printing.gyp
+++ b/printing/printing.gyp
@@ -98,16 +98,6 @@
           'dependencies': [
             '<(DEPTH)/ui/aura/aura.gyp:aura',
           ],
-        }], 
-        ['toolkit_uses_gtk == 0',{
-            'sources/': [['exclude', '_cairo\\.cc$']]
-          }, {  # else: toolkit_uses_gtk == 1
-          'dependencies': [
-            # For FT_Init_FreeType and friends.
-            '../build/linux/system.gyp:freetype2',
-            '../build/linux/system.gyp:gtk',
-            '../build/linux/system.gyp:gtkprint',
-          ],
         }],
         # Mac-Aura does not support printing.
         ['OS=="mac" and use_aura==1',{
@@ -255,7 +245,6 @@
         'units_unittest.cc',
       ],
       'conditions': [
-        ['toolkit_uses_gtk == 0', {'sources/': [['exclude', '_gtk_unittest\\.cc$']]}],
         ['OS!="mac"', {'sources/': [['exclude', '_mac_unittest\\.(cc|mm?)$']]}],
         ['OS!="win"', {'sources/': [['exclude', '_win_unittest\\.cc$']]}],
         ['use_cups==1', {
@@ -266,11 +255,6 @@
             'backend/cups_helper_unittest.cc',
           ],
         }],
-        ['toolkit_uses_gtk == 1', {
-          'dependencies': [
-            '../build/linux/system.gyp:gtk',
-          ],
-        }],
         [ 'os_posix == 1 and OS != "mac" and OS != "android" and OS != "ios"', {
           'conditions': [
             # TODO(dmikurube): Kill linux_use_tcmalloc. http://crbug.com/345554