SkShaper: optionally disable harfbuzz

gyp/tools.gyp

 # Copyright 2015 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
     # GYP file to build various tools.
 #
 # To build on Linux:
 #  ./gyp_skia tools.gyp && make tools
 #
 {
@@ skipping 449 matching lines @@
         ],
       },
     },
     {
       'target_name': 'using_skia_and_harfbuzz',
       'type': 'executable',
       'sources': [
         '../tools/using_skia_and_harfbuzz.cpp',
         '../tools/SkShaper.cpp',
       ],
+      'variables': { 'skia_example_use_harfbuzz%': 1, },
+      'conditions': [
+        [ 'skia_example_use_harfbuzz',
+          {
+            'defines' : [ 'SK_ENABLE_HARFBUZZ' ],
+            'dependencies': [ 'harfbuzz.gyp:harfbuzz', ],
+          },
+        ]
+      ],
       'dependencies': [
         'skia_lib.gyp:skia_lib',
         'pdf.gyp:pdf',
-        'harfbuzz.gyp:harfbuzz',
       ],
-      'cflags': [ '-w', ],
-      'msvs_settings': { 'VCCLCompilerTool': { 'WarningLevel': '0', }, },
-      'xcode_settings': { 'WARNING_CFLAGS': [ '-w', ], },
     },
     {
       'target_name': 'visualize_color_gamut',
       'type': 'executable',
       'sources': [
         '../tools/visualize_color_gamut.cpp',
       ],
       'include_dirs': [
         '../src/core',
         '../include/private',
@@ skipping 207 matching lines @@
               'pdf.gyp:pdf',
               'gputest.gyp:osmesa',
             ],
             'defines': [ 'FIDDLE_BUILD_TEST' ],
           },
         ],
       },
     ],
   ],
 }