use platform-independent font for gm

gyp/gm.gyp

 # GYP file to build the "gm" (golden master) executable.
 {
   'includes': [
     'apptype_console.gypi',
   ],
   'targets': [
     {
       'target_name': 'gm',
       'type': 'executable',
       'include_dirs' : [
@@ skipping 15 matching lines @@
       ],
       'dependencies': [
         'etc1.gyp:libetc1',
         'flags.gyp:flags',
         'jsoncpp.gyp:jsoncpp',
         'pdf.gyp:pdf',
         'skia_lib.gyp:skia_lib',
         'tools.gyp:crash_handler',
         'tools.gyp:gm_expectations',
         'tools.gyp:resources',
+        'tools.gyp:sk_tool_utils',
       ],
       'conditions': [
         ['skia_android_framework', {
           'libraries': [
             '-lskia',
           ],
         }],
         ['skia_run_pdfviewer_in_gm or skia_poppler_enabled', {
           'sources': [
             '../src/utils/SkPDFRasterizer.cpp',
@@ skipping 42 matching lines @@
             '../src/gpu',
           ],
           'dependencies': [
             'gputest.gyp:skgputest',
           ],
         }],
       ],
     },
   ],
 }