Make gm use SkFlags.

gyp/gm.gyp

 # GYP file to build the "gm" (golden master) executable.
 {
   'includes': [
     'apptype_console.gypi',
   ],
   'targets': [
     {
       'target_name': 'gm',
       'type': 'executable',
       'include_dirs' : [
         '../src/core',
         '../src/effects',
         '../src/pipe/utils/',
         '../src/utils/',
       ],
       'includes': [
         'gmslides.gypi',
       ],
       'sources': [
         '../gm/gm.cpp',
         '../gm/gmmain.cpp',
         '../gm/system_preferences_default.cpp',
         '../src/pipe/utils/SamplePipeControllers.h',
         '../src/pipe/utils/SamplePipeControllers.cpp',
       ],
       'dependencies': [
         'skia_base_libs.gyp:skia_base_libs',
         'effects.gyp:effects',
+        'flags.gyp:flags',
         'images.gyp:images',
         'jsoncpp.gyp:jsoncpp',
         'pdf.gyp:pdf',
         'utils.gyp:utils',
       ],
       'conditions': [
         ['skia_os == "mac"', {
           'sources!': [
             '../gm/system_preferences_default.cpp',
           ],
@@ skipping 20 matching lines @@
       ],
     },
   ],
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: