On the bots, there's no need to link GMs into SampleApp.

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/images',
         '../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': [
         'etc1.gyp:libetc1',
         'flags.gyp:flags',
         'jsoncpp.gyp:jsoncpp',
@@ skipping 58 matching lines @@
             '../src/gpu',
           ],
           'dependencies': [
             'gputest.gyp:skgputest',
           ],
         }],
       ],
     },
   ],
 }