initial checkin of SkSL compiler

gyp/gpu.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 for building gpu
 {
   'target_defaults': {
     'conditions': [
       ['skia_os != "win"', {
         'sources/': [ ['exclude', '_win.(h|cpp)$'],
@@ skipping 70 matching lines @@
     {
       'target_name': 'skgpu',
       'product_name': 'skia_skgpu',
       'type': 'static_library',
       'standalone_static_library': 1,
       'dependencies': [
         'core.gyp:*',
         'utils.gyp:utils',
         'etc1.gyp:libetc1',
         'ktx.gyp:libSkKTX',
+        'sksl.gyp:sksl',
       ],
       'includes': [
         'gpu.gypi',
       ],
       'include_dirs': [
         '../include/gpu',
         '../include/private',
         '../src/core',
         '../src/gpu',
         '../src/image/',
+        '../src/sksl',
       ],
       'sources': [
         '<@(skgpu_sources)',
         '<@(skgpu_native_gl_sources)',
         '<@(skgpu_vk_sources)',
         'gpu.gypi', # Makes the gypi appear in IDEs (but does not modify the build).
       ],
       'conditions': [
         [ 'skia_gpu_extra_dependency_path', {
           'dependencies' : [
@@ skipping 129 matching lines @@
           },
         }, {
           'sources!': [
             '<@(skgpu_vk_sources)',
           ],
         }],
       ],
     },
   ],
 }